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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. |
Manish engages a labour to get some repair work.charges to be paid for this work zeroes of the polynomial x2-300x+22500 find labour claim ₹125 for the whole work. Manish paid the actual amount. what value is depicted by Manish |
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Answer» hi |
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| 2. |
By selling a watch for Rs 1275, Javed lost 15%. At what price should he sellto make a profit of 10%? |
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| 3. |
ag on:ound oft 8.998 to 2 significant digits |
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Answer» 8.995 will round off to 9.000 9.000 the correct answer of the given question |
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| 4. |
/pf'te.0,thenprovethat: (bboft (cca)2(a + b)2-3Ifb+c 0, then prove that:he |
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| 5. |
/12)Simplify-7-[(-8)-6+(-2)-(10 oft-2)-(7-17) |
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Answer» -7 - [(-8) - 6 ÷ (-2) - {10 of (-2) - (7 - 17)}]= - 7 - [ - 5 - {10 * (-2) + 10}]= - 7 - [ - 5 - { - 20 + 10}]= - 7 - [ - 5 + 10]= - 7 - 5= - 12 |
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| 6. |
3.find the mean oftean of eight observations is 25, Ifone observation 11 is excremaining |
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Answer» If the mean of 8 observations is 25, its total is 25 * 8 = 200. If the observation 11 is excluded, then the total of 7 observations will be 200 - 11 = 189. Therefore, the mean of 7 observations with a total of 181 is 189/7 = 27 |
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| 7. |
a=2, d=8, \mathrm{S}_{n}=90, \text { find } n \text { and } a_{n} |
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| 8. |
he form of a square of side 30 m.Ifit is re-bent in the form of a circle,then whatA wire is bent in twill be its radius? (Taken 3.14)2. |
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Answer» Perimeter of square wire=Circumference of circular wire4*side=2πr4*30=2(3.14)rr=19.1m please answer my more questions |
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| 9. |
5. A wire when bent in the form of an equilateral triangle encloses an areaof 121v3 cm2. The same wire is bent to form a circle. Find the areaenclosed by the circle. |
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| 10. |
Pa anierobrlalliareequal,provethatitis a e12. Show that the diagonals of a rhombus bisect each other at right angles.13 ABOD igoaui |
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| 11. |
/Example 10 t In a musical chair game, the person playing the music has beenadvised to stop playing the music at any time within 2 minutes after she starts plavinWhat is the probability that the music will stop within the first half-minute after startingSoletien : Hee the possible outcomes are all the numbers between 0 and 2. Thisthe portion of the number line from 0 to 2 (see Fig. 15.1).Fly, 15.1 |
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Answer» Given that The music will stop within 2 minutes = 120 seconds So the music should stop from 1 second to 119 seconds. Half a minute = 30 seconds Less than half a minute means from 1 second to 29 seconds. Probability of stopping the music within half minute = 29/119 |
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| 12. |
If A is a square matrix satisfying A'A = I, write the value of A. |
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| 13. |
9. In Fig. 10.13, XY and X'Y' are two parallel tangents to a circle with centre Oanother tangent AB with point of contact C intersecting XY at A and X'Y' at B Pthat < AOB = 90n eyternal noint to a ci |
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Answer» thank you...but are u class 10? |
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| 14. |
Any positiveoddinteger cannot be of the form (where q is some integer).(A) 6q+1(B) 6q + 3(C) 6q + 5(D) 6q + 2 |
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Answer» option (d) is correct as; 6×1+2=86×2+2=146×3+2=20 and so on soo sorry but wrong answer |
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| 15. |
Show that any positive odd integer is of the form 6q+1, or 6q +3, or 6q+5, where issome integer |
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| 16. |
-Show that any positive odd integer is of the form6q+1, 6q+3 or 6q+5, where q is some integer |
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| 17. |
6. A wire is in the shape of a rectangle. Itssame wire is rebent in the shape of ase shape of a rectangle. Its length is 40 cm and breadth is 22.combent in the shape of a square, what will be the measure of eachAlso find which shape encloses more area? |
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Answer» Square takes more places Area of rectangle = 40 × 22 = 880 cm²Perimeter of square = Perimeter of rectangle = 2(40 + 22) = 2 × 62 = 124 cm4 × side = 124 side = 124/4 = 31 cmArea of square = side × side = 31 × 31 = 961 cm²Square encloses more area |
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| 18. |
MULTIPLE CHOICE QUESTIONS7ĺcorrect options.A darde is(b) 3D shape(d) 5D shapeD shaped 4D shapeA mangle has 3 sides and(a) 4cornerso bcornersA rctangle has 4 corners anda) 6sidesg 4sidesube has 6 faces, 8 corners and) 16edges) 18edges(b) 3 corners(b) 5 corners(b) 5sides(d) 8sides(b) 10edges(d) 12 edges |
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Answer» 1 2d2 3 corners3 4 sides4 16 edges |
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| 19. |
Shivani bought eggs atpercent per egg.30 per 10 and sold at the rate ofき46.80 per dozen. Find the gain or loss |
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| 20. |
A wire is in the shape of a rectangle. Its length is 40 cm and bread is 22cm. The same wire is rebent in the shape of a square, what will be the measures. Also find which shape encloses more area? |
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| 21. |
From a pack of 52 playing cards all cards whose numbers are multiples of 3 are removed. A cardis now drawn at random.What is the probability that the card drawn is(0) a face card (King, Jack or Queen)(i) an even numbered red card ?13) |
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Answer» (i) Number of face cards = 12Probability of face card = 12/52= 3/13(ii) Number of even numbered red card = 10Probability of even numbered red card = 10/52= 5/26 |
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| 22. |
it at 7600, Find the loss and ioss%selling a refrigerator at33000 a man gains 10%. Find the cost price of the article. |
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Answer» Given selling price of refrigerator SP = Rs 33000Gain = 10% Let cost price of refrigerator be CP Then,SP = CP + (10/100)CP33000 = CP(1 + 1/10)33000 = CP(11/10)CP = 33000*10/11CP = 30000 COST PRICE OF REFRIGERATOR IS RS 30,000 |
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| 23. |
Simplify : (V& IST)28 |
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Answer» Please hit the like button if this helped you. |
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| 24. |
By elling pen for165, Mukti gains 10%. If she had sold it for? 157.50 what percentage wouldshe have lost or gained? |
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Answer» Pata nahi ..........................mazak kar raha tha abhi bata ta hu ruko jaldi de abe mai mazak kar raha tha SP=165gain=10%so CP=165/1.1=150 SP=157.50gain percentage=(157.5-150)/150 *100=5% |
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| 25. |
(10)Adealer gains 10% by selling an article for11,000. At what price must he sell it soas to gain 30%? |
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Answer» SP=11000gain=10% so CP=11000/1.1=10000gain is 30% so SP=10000*1.3=13000 |
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| 26. |
(10)A dealer gains 10% by selling an article for11,000. At what price must he sell it soas to gain 30%? |
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Answer» SP=11000gain=10% so CP=11000/1.1=10000gain is 30% so SP=10000*1.3=13000 |
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| 27. |
nsWhat is the volume of a cube, whose facehas an area of 70.56 mm2?. |
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| 28. |
find the missing values.Diagonal-1 (dDiagonal-2(d) Area of rhombus16 cm12 cm27 mm24 m2025 mm257.6 m |
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| 29. |
By selling a chair for? 1375 a man gains 10%. Find its cost price. |
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| 30. |
Pankaj sells two cycles forFind his gain or loss per cent.16,2376 each. On one he gains 10% and on the other he loses 10%. |
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| 31. |
Pankaj sells two cycles forFind his gain or loss per cent2376 each. On one he gains 10% and on the other he loses 10%.3. |
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| 32. |
Q3 By selling a chair for Rs 1375 a man gains 10% Find its cost price. |
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Answer» cp = sp×100 / (100+ profit ) cp= 1375×100/(100+10) cp= 1375× 100/ 110 so cp = 1250 cp=1250 is correct answer |
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| 33. |
8.1 If α, β are zeroes of r2-6x + k. what is the value of k if 3a + 2β-207(b) S(d) -8 |
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Answer» We know that α and β are zeroes of the polynomial f(x) = ax^2+ bx + cα+ β = -b / a αβ = c / a.Given thatα and β are zeroes of x2- 6x + k = 0.α+ β = 6 -----------------(1) ,αβ = kgiven that 3 α + 2 β = 20 -------------------(2)Solving (1) and (2) we getα = 14 ,β = - 8But αβ = k ⇒ k = -112 . |
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| 34. |
8. If the base of the rectangle is 29.8 mm and the area is 1206.9 mm2, what is the perimeter of the rectangle? |
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Answer» base is 29.8 mm area is 1206.9 mm*mm so other side = 1206.9/29.8 = 40.5 mm so perimeter = 2(40.5+29.8) = 140.6 mm |
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| 35. |
liven cote-cot20Find all other in gonometricin da omomety21atios. |
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Answer» 21 lamb....20adhar.......29 karn |
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| 36. |
The length of a rectangular blackboard is three times its width. If the width is 1.5 m, find its area. Alfind the cost of painting the blackboard at the rate of ?4 per sq. m. |
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| 37. |
Length of a rectangular blackboard is 8m more than its breadth. If its length is increased by m and itsth is decreased by 4 m, its area remains unchanged. What is the length of the blackboard?74. |
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| 38. |
3. In the given figure, OABC is a Psquare and OPBQ is a quadrant 7Aof circle. If OA = 20 cm, then findthe area of the shaded region.5ho |
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| 39. |
cos α-sin αthen for what value of α issina cos α 1,A an identity matrix |
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| 40. |
what is identity matrix? |
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Answer» Ans :- In linear algebra, the identity matrix, or sometimes ambiguously called a unit matrix, of size n is the n × n square matrix with ones on the main diagonal and zeros elsewhere. It is denoted by Iₙ, or simply by I if the size is immaterial or can be trivially determined by the context. PLEASE LIKE THE ANSWER |
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| 41. |
3.25: If A . Show that A sShow that A satisfied the matrixA3A + 21, Where I is the identity matrix.er 20os Winter 2013 |
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| 42. |
t If the circumference circucrence of a circular sheet is 154 m, find its radius. Also find the area ofthe sheet. (Take π-T)A gardener7wants to fence a circular garden of diameter 21m. Find the length of therope he needsto purchase, if he makes 2 rounds of fence. Also find the cost of the |
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Answer» thanks again who has been answered this question and helped me a lot |
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| 43. |
O,0tan018. IAand I is thetan0identity matrix of order 2, show that |
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| 44. |
Also find which shape encloses more area7. The perimeter of a rectangle is 130 cmIf the breadth of the rectangle n30cm, find its length Also find the area of the rectangle8 Adonorf lanath |
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Answer» 2l + 2b = 130 2l = 130 - 2*30 l = 70/2 l = 35 cm |
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| 45. |
1.2If A is a 3x3 matrix and det (3A)-K(det A) then K1.914,.273.814.243 |
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| 46. |
find the 10th term of the geometric progression 5,25,125,.... .also find it's nth term |
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| 47. |
[Find the 10th term of the G. P. 5, 25, 125,Also find its nth term.] |
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| 48. |
(xii) g(y) = 7y2 -he following, find a quadratic poLiven. Also, findof the following, fir |
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| 49. |
Select a pair of integers whose sum is -51 |
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Answer» -1 -50 -2 -49 -3 -48 -4 -47 -4 -46 -6 -45 .......... |
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| 50. |
Monkey is climbing an oily pipe. The monkey slips down 2 metres for every 5 metres inreach the top of t11.If the height of pipe is 25 metres, how many jumps monkey need to reach the top of200 km for Delhi |
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Answer» He will complete it in 9 jumpshe will jump 3M in each jumpso3+5= 8-2= 6m in secondnow6+5-29 m in third9+5-212 m in fourth12+5-215 in fifth15+5-218 in sixth18+5-221 in seventh21+5-224 in eightand then in ninth he would have reached |
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