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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A photograph of a bacteria enlarged 50,000 timesattains a length of 5 cm as shown in the diagram.What is the actual length of the bacteria? If thephotograph is enlarged 20,000 times only, whatwould be its enlarged length?5. |
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| 2. |
2.and HD3. Find the measure of all the four angles formede measure of all the four anale farmed by the line segments A |
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Answer» picture is not clear.......2x+x=1803X=180X=180/3x=60° picture is not clear plz repost it. x=60° is correct answer. |
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| 3. |
39. In AABC, if AD is the bisector of ZA, showCV that AB > BD and AC > DC.de in which |
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| 4. |
pradeep pays 9600as rent for 3 months. How much does he have to pay for 2 years |
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Answer» In 2 years =24 months hence 24/3=8hence he has to pay=8*9600=76800rupees |
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| 5. |
\left. \begin{array} { l } { \text { If } x _ { 1 } + \frac { 1 } { x } = 3 \text { find value of } x ^ { 5 } + \frac { 1 } { x ^ { 5 } } } \\ { ( A ) 126 } \\ { ( C ) 123 } \\ { \text { If } ( x + \frac { 1 } { x } ) ^ { 2 } = 3 \text { value of } x ^ { 18 } + x ^ { 12 } + x ^ { 6 } + 1 } \end{array} \right. |
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| 6. |
indthevalue(s)ofkforwhichthe quadratic equation 22 -kx + k 0 has equal |
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| 7. |
,a. If x-1-3,find the value ofx 2 |
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| 8. |
6 Acircular park of radius 20m is situated in a colony. Three boys Ankur, Syed andDavid are sitting at equal distance on its boundary each having a toy telephone inhis hands to talk each other. Find the length of the string of each phone. |
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| 9. |
thé distalice bu6 Acircular park of radius 20m is situated in a colony. Three boys Ankur, Syed andDavid are sitting at equal distance on its boundary each having a toy telephone inhis hands to talk each other. Find the length of the string of each phone. |
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| 10. |
A circular park of radius 20m is situated in a colony. Three boys Ankur, Syed andDavid are sitting at equal distance on its boundary each having a toy telephone inhis hands to talk each other. Find the length of the string of each phone.6. |
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Answer» I didn't understood |
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| 11. |
A circular park of radius 20m is situated in a colony. Three boys Ankur, Syed andDavid are sitting at equal distance on its boundary each having a toy telephone inhis hands to talk each other. Find the length of the string of each phone. |
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| 12. |
Fig. 10.25A circular park of radius 20m is situated in a colony. Three boys Ankur, Syed andDavid are sitting at equal distance on its boundary each having a toy telephone inhis hands to talk each other. Find the length of the string of each phone. |
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Answer» let AB,BC,AC be the length of each string AB=BC=AC [ equal arcs subtends equal chords] construction : draw perpendicular bisector of AB,BC,AC •AO=OB=OC(equal radii)=20m Centroid - the centroid of a circle is the point located at 2/3 of the distance from the vertex along a median AO/OD=2/1 [centroid of a circle divides a median in the ratio of 2:1 20/OD=2/120/2 = OD10m=OD in∆BOD(BD)^2=(20)^2-(10)^2BD=√400-100BD=√300BD=10√3 a line from a centre to the chord is the perpendicular bisetcor of the chord BD=DC BC=2×10√3=20√3m AB=BC=CA=20√3m hence length of each string are 20√3m hit like if you find it useful any other methods the other method |
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| 13. |
Kamal buys a washing machine for ₹ 10000. He pays₹ 2000 in cash and agrees to pay the balance in instalmentsof 500 plus 10% interest on the unpaid amount. Find thetotal amount paid for the washing machine. |
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Answer» kamal owes 8000 rs.he makes a payment of 500 rs.there is 7500 rs left in the loan so kamal pays 10% of that which is equal to 750 rs. kamal owes 7500 rs.he makes a payment of 500 rs.there is 7000 rs left in the loan so kamal pays 10% of that which is 700 rs. each time kamal makes a payment, kamal needs to pay 500 rs plus 10% of the unpaid balance which is 50 rs less each time. that makes this an arithmetic series type of problem where A1 = 750 and d = -50 and n = 16. the formula for the sum of an arithmetic series is: Sn = n * (A1 + An) / 2 in this problem, n = 16 and A1 = 750 and An = 0 so the formula becomes: Sn = 16 * (750 + 0) / 2 which becomes: Sn = 8 * 750 which becomes: Sn = 6000 kamal will have to pay 8000 in equal installments of 500 each plus additional 6000 in interest for a total of 14,000 rs. |
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| 14. |
(2) Kantabai bought 1 kg tea and 5 kg sugar from a shop. She paid ?50 asreturn fare for rickshaw. Total expense was ? 700. Then she realised that byordering online the goods can be bought with free home delivery at the sameprice. So next month she placed the order online for 2 kg tea and 7 kg sugar.She paid 880 for that. Find the rate of sugar and tea per kg |
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Answer» Let price of 1 kg tea = xLet price of 1 kg sugar = y 3/2x + 5y + 50 = 7003x + 10y = 1300.....(1)2x + 7y = 880......... (2) Multiply eq(1) by 2 and eq(2) by 3 6x + 20y = 2600......(3)6x + 21y = 2640......(4) Subtract eq(3) from eq(4)y = 40 Put value of y = 40 in eq(1)3x + 10*40 = 13003x = 1300 - 4003x = 900x = 300 Price of 1 kg tea = Rs 300Price of 1 kg sugar = Rs 40 let price of 1 kg tea = xlet price of 1 kg sugar =y 3/2+5y+50=7003x+10y= 1300....(1) 2x+7y= 880......(2) Multiply eqn (1) by 2 & eqn (2) |
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| 15. |
The present population of a city is 180000. If it increases at the rate of 10% per annum, then find its population after 2 years. |
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Answer» Present population of city = 180000Rate of increase per annum(per year) = 8℅ Hence,Population after 1 year = 180000 + 8℅ of 180000 = 180000+8/100*180000 = 180000+14400 = 194400 Now, Population after 2 years = 194400+8/100*194400 = 194400+15552 = 209952 Hence, Population of city after 2 year = 209952 P=1,80,000R=10%n=2 years A=P(1+R|100)^nA=1,80,000(1+10|100)^2A=1,80,000(1+1|10)^2A=1,80,000(10+1|10)^2A=1,80,000(11|10)^2A=1,80,000×11|10×11|10A=1800×11×11A=2,17,800Therefore,the population after 2 years is 2,17,800. |
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| 16. |
A man can buy 24 kg of sugar for264. After six months, he could buy only 22 kVhat is the increase in price of sugar? |
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Answer» Total amount of sugar bought = 24 kg • Total money used = 264 Rs. Rate of Sugar,---> = Total money/total amount = 264/24 = 11 Rs./kg •°• Earlier, the cost of 1 kg sugar was 11 Rs. After six months, • Total amount of sugar bought = 22 kg • Total money used = 264 Rs. →→→ Rate of sugar,----> = total money/total amount = 264/22 = 12 Rs./kg •°• Today, the cost of 1 kg sugar is 12 Rs. So, increase in price of sugar, = new price - old price = 12 - 11 = 1 Rs. •°• Increase in the price of sugar is 1 Rs./kg. |
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| 17. |
The present population of a town is 28000.If it increases at the rate of 5%per annum ,what will be its population after 2 year? |
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| 18. |
or park of radius 20m is situated in a colony. Three boys Ankur, Syed anditting at equal distance on its boundary each having a toy telephone inDavidareshishands to talk each other. Find the length of the string of each phone. |
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| 19. |
'Then, find the Value net?잇. |
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| 20. |
A circular park of radius 20m is situated in a colony. Three boys Ankur, SyedandDavid are sitting at equal distance on its boundaryjeach having a toy telephone inhis hands to talk each other. Find the length of the string of each phone. |
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| 21. |
A circular park of radius 20 m is situated in a colony. Three boys Ankur,Syed and David are sitting at equal distance on its boundary each having atoy telephone in his hands to talk each other. Find the length of the string ofeach phone.) |
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| 22. |
If a relation R is reflexive, symmetric andtransitive then the relation is(a) fa-3Terit Binary. (b)wg Conugate(c) gRdI Equivalence (d)witาซื้ N/T |
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Answer» The answer is Option C |
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| 23. |
A circul park of radius 20m is situated in a colony, Three boys Ankur, Syed andDavid are ting at equal distance on its boundary each having a toy telephone inhis hands to talk each other Find the length of the string of each phone |
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Answer» woh |
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| 24. |
A circular park of radius 20m is situated in a colony. Three boys Ankur, Syed andDavid are sitting at equal distance on its boundary each having a toy telephone in .his hands to talk each other. Find the length of the string of each phone.6. |
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Answer» Thamks Thanks |
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| 25. |
(2) Kantabai bought 1 kg tea and 5 kg sugar from a shop. She paid 50 asreturn fare for rickshaw. Total expense was 700. Then she realised that byordering online the goods can be bought with free home delivery at the sameprice. So next month she placed the order online for 2 kg tea and 7 kg sugar.She paid 3880 for that. Find the rate of sugar and tea per kg. |
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Answer» Let x be cost of tea and y be cost of sugaras she paid 50rs as return fare 700-50=650rstherefore, 1.5x + 5y = 650 2 X (1.5x+5y=650)...as to remove the decimal3x+10y=1300...1A\C 2nd 2x+7y=880...2multiply eqn 1 by 2 and 2 by 36x+20y=2600......36x+21y=2640......4substracting eqn 4 and 36x+21y=26406x+20y=2600____________y = 40 substituting y=40 in eqn 13x + 10y = 13003x + 10(40) = 13003x + 400 = 13003x = 1300-400 3x = 900x = 900/3x = 300 thereforecost of tea per kg = 300rscost of sugar per kg = 40rs |
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| 26. |
2 Principal-Rs. 200, Rate-3% p.a., Time-3 months. |PpgFind the Interest |
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| 27. |
0.A man buy egg at Rs 24 a dozen and sells them at 4 for Rs 10. Find his gain or loss percent. |
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Answer» selling price = 10*3 = 30 Gain percent = 30-24/24 *100 = 6/24 *100 = 25% i want to ask you from where the 3 came |
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| 28. |
If 8 men or 12 women can do a piece of work in 10 days, then find the number of daysrequired by 4 men and 4 women3. |
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Answer» thank you |
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| 29. |
8 women can complete a piece of work in 15h. Inhow many hours will 12 women complete thesame piece of work? |
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| 30. |
Define PO relation and Equivalence relation with examples. |
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Answer» In mathematics, anequivalence relationis a binaryrelationthat is reflexive, symmetric and transitive. Therelation"is equal to" is the canonicalexampleof anequivalence relation, where for any objects a, b, and c: a = a (reflexive property), if a = b then b = a (symmetric property), and. What is the full form of PO? i also don't know so that is why i am asking because my assignment is pending |
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| 31. |
1 Ankur buys a chocolate for 3. If he gives 100, how much money shouldhe get back |
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Answer» Chocolate is of 32 paid 100 so he will get back 100 - 32 = 68 Rs If you find this answer helpful then like it. |
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| 32. |
1. What do you mean by a binary relation on a set A?Define the domain and range of a relation on A. |
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Answer» In mathematics, abinary relationon asetA is asetof ordered pairs of elements of A. In other words, it is a subset of the Cartesian product A2= A × A. More generally, abinary relationbetween two sets A and B is a subset of A × B. |
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| 33. |
6. Prove that the relation on the net Zof all integers defined by (x, y) Rex-y is divisible!an equivalence relation on Z. |
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| 34. |
Let a, bc) What is the equivalence relation of smallest cardinalitysquivalence relation of largest cardinality on A? |
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| 35. |
Rs 800) invested ai compound interes[ gives Rs 1261 as ınterest after 3 vears. I he rac o nterest perannum isB) 175%C) 10%D) 5% |
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Answer» Po = Intial amount n= 3 years Interest amount =1261 thanks bro |
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| 36. |
The marked price of a mobile ph0%anone is R 8,000. A shopkeeper sells it at a discoFindd earns a profit of 25%.the cost price of the mobile phone.姊布で1 히 |
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Answer» marked price is = 8000 now, price after 20% discount is = 8000*(100-20)% = 0.8*8000 = 6400 again , This price is selling price with 25% profit so, CP = 75% of 6400 = 0.75*6400 = 4800 |
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| 37. |
Find the compound interest at the rate of 5% per annum. for 3 years on that principal which n syears at the rate of 5% per annum gives 1,200 as the simple interest.ot hein |
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Answer» thank for you for answering my question ans is 1261Rs |
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| 38. |
Ridhima deposited ?46,000 in a bank that gives compound interest at 85% per annum. How muchmoney will Ridhima get back after 3 years. Also find the compound interest. |
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| 39. |
10. Divide the sum of 9s and g by their dilference65、812 3 |
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| 40. |
8. आलेख से ज्ञात कीजिए कितने बच्चों ने 20 से कम अंक पास(JNV 2013]7 गए"015)विद्यार्थियों की संख्या05 10 15 20 25 30 35 ।| अंक-(2) 45 (3) 65 (4) 85(1) 35 |
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Answer» 35 35 is the answer of the bar graph Answer is 45, = 5+ 10+15+10+5 =45, 45 students get less marks 5+10+15+10+5=4545 बच्चों ने 20 से कम अंक पाए| 35 answer hai p. plz marks de dijiye |
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| 41. |
(3/5 + 1/5 - 3/10) × (36/65 ÷ 9/13) |
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| 42. |
8. निम्नलिखित सारणी 35 नगरों की साक्षरता दर (प्रतिशत में) दर्शाती है। माध्य साक्षरता दर ज्ञात कीजिए।INCERT]साक्षरता दर 9 में | 45-55 | 55-65 | (65 75 | 75-85 85 95| नगरों की संख्या | 3 _10' ।। । है । 3 । |
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| 43. |
65 - 10 + 5 \div 3 \times 4 = ? |
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| 44. |
Each side of a square flower bed is 3 m 80 cm long. It is extended by digging a strip50 cm wide all around it. Find the area of the enlarged flower bed and also the increasein the area of the flower bed. |
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| 45. |
8. Each side of a square flower bed is 3 m 80 cm long. It is extended by digging a strip50 cm wide all around it. Find the area of the enlarged flower bed and also the increasein the area of the flower bed. |
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| 46. |
s the angle of elevation of the tcp B of atower AB from a point X on the groundis 60°. At a point Y, 40 m verticelly aboveX, the angle of elevation of the top is 45Find the height of the tower AB and thedistance XBICUSE 2016] |
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| 47. |
margin of2omalongeach Ilaofsiue3 Each side of a square flower bed is 3 m 80 cm long. It is extended by diggcm wide all around it. Find the area of the enlarged flower bed and also thein the area of the flower bed.50 |
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Answer» Each side of flower bed = 3.8 mArea = 3.8× 3.8Area of flower bed before extension= 14.44 sq mIf it is extended by digging a strip of 50 cm wide all around it, then the new side will be = 3.8 + 1.0 = 4.8 mArea of the flower bed after extension = 4.8× 4.8Area of enlarged flower bed = 23.04 sq mIncrease in the area of flower bed = 23.04 - 14.44= 8.6 sq m |
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| 48. |
By selling an article for 100, aman's profit is 15. Then his profitpercent is: |
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Answer» Cost = Selling Price - Profit = 100- 15 = Rs. 85 Profit Percent = 15/85 * 100= 17.65 % |
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| 49. |
3.5+23Rationalize the denominator: -V5 - 3 |
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| 50. |
. If the quonent obtamed orr rmteBerr earns a profit of 1 on selling one pen and suffers a loss of 30 paise on selling one per5. In that month, he sold 40 pens. How many pencils dA sIn a particular month, he incurs a loss of |
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