Saved Bookmarks
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. |
If mode is 24•5 and mean 29•75 and what is median |
|
Answer» Answer: = 24.5 + 2(29.75) = 24.5 + 59.5 3 median = 84 = 84/3 median = 28 |
|
| 2. |
If a is an event of a random experiment such that p(a): P(a)bar =1:2fl find the value of p(a) bar |
|
Answer» Answer: 2/3 Step-by-step EXPLANATION: solution is in the attachment. i HOPE it helps U mate... mark this the BRAINLIEST..... |
|
| 4. |
In a polynomial the exoponents of the variables are always |
|
Answer» Answer: All the exponents in the ALGEBRAIC expression must be non-negative integers in order for the algebraic expression to be a POLYNOMIAL. ... Polynomials in two VARIABLES are algebraic expressions consisting of TERMS in the form axnym a x n y m . |
|
| 5. |
1.Multiple choice Questions1.The sides of a triangle are 56 cm, 60 cm and 52 cm long. Then the area of the triangle is |
|
Answer» Answer: 174,720Step-by-step explanation: 56×60×52= 174,720 |
|
| 6. |
Solve (a) -(x+2)=2(3x-6) |
|
Answer» I have ATTACHED the answer... HOPE it helps .. Please mark me as the brainliest.... |
|
| 7. |
Solve equation by quadratic fornula x/x-1+ x-1/x = 4 |
|
Answer» Answer: Step-by-step explanation: (x/x-1)+(x-1/x)=4 x*x+(x-1)^2=4(x(x-1)) x^2+x^2-2x+1=4X^2-4x 2x^2+2x+1-4x^2=0 2x^2-2x-1=0 roots are b^2-4ac=4+4*2=4+8=12 x1=-b+(sqrt(b^2-4ac))/2a =2+sqrt(12)/4=2+2sqrt(3)/4=1+sqrt(3)/2 x2=-b-(sqrt(b^2-4ac))/2a =2-sqrt(12)/4=2-2sqrt(3)/4=1-sqrt(3)/2 |
|
| 9. |
What is the value of 5/ -5 in fraction |
|
Answer» Step-by-step explanation: 5/-5 =1/-1 |
|
| 10. |
SQUARES AND SQUARE ROOTS1.What are square numbers or perfect squares? Give examples?2.Find the perfect square numbers between (1) 30 and 40 ii) 50 and 603.List out all the perfect square numbers below 100.4.What are the ending digits (digits in one's place) of the square numbers?5.Which of the following 123², 77²,82²,161²,109² would end with digit '1' in its onesplace? What do you observe?6.Which of the following numbers 19²,24²,26² would have digit 6 in unit's place? Whatdo you observe?7.What will be the one's digit in the square of the following?i) 1234ii) 26387iii) 52698iv) 21222v) 91068.If a number contains three zeros at the last then how many zeros will its squarehave?9.The squares of which of the following would be odd number?i) 431ii) 2826iii) 7779iv) 82004 |
|
Answer» 1) In mathematics, a square number or perfect square is an integer that is the square of an integer; in other WORDS, it is the product of some integer with itself. For example, 9 is a square number, since it can be written as 3 × 3. A perfect cube is a number that is the cube of an integer. For example, 125 is a perfect cube since 125 = 5 × 5 × 5= 53. Some examples of perfect cubes are 1, 8, 27, 64, 125, 216, 343, .. 2) (i) perfect square between 30 and 40 is only 36 (ii) there is no perfect square between 50 and 60 3) perfect squares below 100 are 1,4,9,16,25,36,49,64,81 4) 1,4,9,6,5 5) 161 and 109 6) 24 and 26 7) 6, 9, 4, 4, 6 9)431 and 7779 Hope it helps u Please mark it as brainleist |
|
| 11. |
Linda saves N$ 150 the first month and every month later N$ 15 more.Anil starts with the same amount but increses it by 5% each month later.who will have more after 3 and a half years and how much more? |
|
Answer» GIVEN : The amount of money saves by LINDA in first month = $ 150 The amount of money saved by Linda in later months = $ 15 more And Anil saves money at first month = $ 150 The rate of increasing saving = R = 5% each months To Find : who will have more after 3 and a half years and by how much more Solution : Total number of months = 12 × 3 + 6 = 42 The money saves by Linda = $ 150 + $ 15 × 41 = $ 150 + $ 615 = $ 765 Again For Anil The money saves by Anil = First month money + money saves after n years The money saves by Anil = $ 150 + $ 150 × = $ 150 + $ 150 × = $ 150 + $ 150 × = $ 150 + $ 1160 = $ 1310 ∵ The money saves by Linda = $ 765 And The money saves by Anil = $ 1310 ∴ The money saves by Anil is more than that of Linda = $ 1310 - $ 765 = $ 545 Hence, The money saved by Anil is more that that of Lind and by $ 545 Answer |
|
| 12. |
How many litres of eater have to be added to 1125L of the 45% solution of acid so that the resulting mixture will conatain more than 25% but less than 30% acid content? |
|
Answer» Let x liters (l) of water is required to be added. Then, total mixture = (x + 1125) liters
It is evident that the amount of acid CONTAINED in the RESULTING mixture is 45% of 1125 liters(l) . This resulting mixture will contain more than 25% but less than 30% acid content. ∴30% of (1125 + x) > 45% of 1125 And, 25% of (1125 + x) < 45% of 1125 30% of (1125 + x) > 45% of 1125 Calculations 506.25/(1125 + x) >= .25 Solving for x we get 506.25 >= (.25)(1125 + x) 506.25 >= 281.25 + .25x 225 >= .25x 900 >= x. So we need to add 900 litres to make the WEAKER solution; this is the most we can add and still be within the range stated for the problem. For the stronger solution, 506.25/(1125 + x) <= .3 506.25 <= (1125 + x)(.3) 506.25 <= 337.5 + .3x 168.75 <= .3x 562.5 <= x. So we need to add at least 562.5 litres, this will make the stronger solution. The final answer, then, is 562.5 <= x <= 900 Thus, the required number of liters (L) of water that is to be added will have to be more than 562.5 but less than 900 |
|
| 13. |
Please solve for x , if o is centre . |
|
Answer» Answer: 37+y+x=180 Step-by-step EXPLANATION:hope it HELPS U plz mark as brainlist 1 |
|
| 14. |
The product of two rational numbers is -16/9 If one the number is -4/3 find the other |
|
Answer» the other is -16/9/-4/3=4/3 select me as the BRAINLIEST if I am RIGHT |
|
| 15. |
PLEASE ANSWER CLASS 10 STATISTICS Q2 |
|
Answer» Step-by-step EXPLANATION: they GIVEN more than now to SUBRACT 100-85=15 otherwise options may be WRONG |
|
| 16. |
Simplify 2 1/8+3 1/6 |
|
Answer» Answer: 21/8+31/6 =2.625+5.166 =7.791 Step-by-step EXPLANATION: hope it helps you |
|
| 17. |
Which of the following is a pair of co-primes?(a) (21, 35) (6) (23, 92) S (18, 25)(d) (16, 62) |
|
Answer» EXCEPT (d) |
|
| 18. |
Prove that sin 20° sin 70° - cos 20° cos 70º = 0. |
|
Answer» Step-by-step EXPLANATION: SIN 20° sin (90°-20°) = COS 20° cos (90°-20°) sin 20° cos 20° = cos 20° sin 20° = 0 |
|
| 19. |
2+2/?=1/2pls answer |
|
Answer» Step-by-step EXPLANATION: LET it be x Now, 4/x=1/2 So, x=4×2=8 Therefore, x=8 Please MARK me as BRAINLIEST. |
|
| 20. |
Vimal sold a certain number of rs 20 shares,paying 8% dividend,at rs 28 and invested the proceeds in rs 10 shares , paying 12% dividend, at 50% premium .if his annual dividend income decrease by rs 120,find the number of shares sold by Vimal |
| Answer» | |
| 21. |
9/7÷8/8. solve this problem. |
|
Answer» Answer: 9 ÷ 8 7. 8 9 × 8 7. 8 = 9 7 I hope this is helpful to you.
Plz mark as a brilliant answer plz.ThankyouStep-by-step EXPLANATION: (1) When you TAKE the Reseprocal of 8/8 then we cannge the sign ÷ to × . (2) in last we CANCEL 8 by 8 and then we get the answer 9/7. |
|
| 22. |
What is the simplified form of the quantity 1 over x minus 1 over y all over 1 over x plus 1 over y ? (5 points)y plus x, over y minus xy minus x, over y plus xx minus y, over x plus yx plus y, over x minus y |
|
Answer» I hope this helps u MATE... mark this the BRAINLIEST..... |
|
| 24. |
Product+5aband 3x-4 |
|
Answer» Step-by-step EXPLANATION: (5AB)(3x-4) = 15abx - 20ab |
|
| 25. |
If A is a square matrix such that A(adjA)=[4 0 0 \ 0 4 0\ 0 0 4] then det(Adj A)= |
|
Answer» Answer: ydh was the first to ADMIT the following day she SAID I 6AM the following day and the other is the best of luck I have had a great day with lemon juice like the other in a SMALL ROOM and the whole room was |
|
| 26. |
Prove tha 3\√5 is irrational? |
|
Answer» i DONT know Step-by-step EXPLANATION: d |
|
| 27. |
A jewellery shop sells 240 necklaces in a month 180 of the necklaces were sold via the shop’s website, the rest were sold in a high street shop. Work out the ratio of online sales, give your answer in it simplest form. |
|
Answer» Answer: 240- 180=60 180:60=3:1 |
|
| 28. |
How can I solve this using cross multiplication method |
|
Answer» Step-by-step EXPLANATION: D= -4 Dx= -12 Dy= -4 x=Dx/D=-12/-4=3 y=Dy/D=-4/-4=1 |
|
| 29. |
Fraction into decimal. 19upon10 |
|
Answer» Answer: 19/10=1.9 please MARK as BRAINLIEST |
|
| 30. |
Share £747 in the ratio 2 : 7 between tom and benHow much will they each get? |
|
Answer» 2p+ 7P = 747 2 * 83 = 166 7 * 83 = 581 hope it helps! |
|
| 32. |
Taxi charges in a city consist of fixed charges and the remaining chargesdepend upon the distance travelled. For a journey of 10 km, the chargepaid is * 75 and for a journey of 15 km, the charge paid is 110. Findthe fixed charge and charges per km. Hence, find the charge of covering adistance of 35 km. |
Answer» Given :-
To find :-
Solution :-→ Let us assume That, fixed charge is = Rs.X → And, Than, Charge per km = Rs.y . Than, A/q, → x + 10y = 75 --------- Equation (1) → x + 15y = 110 --------- Equation (2) Subtracting Equation (1) From Equation (2) , we get, → (x + 15y) - (x + 10y) = 110 - 75 → x - x + 15y - 10y = 35 → 5Y = 35 → y = 7 .Putting in Equation (1) we get, → x + 10*7 = 75 → x = 75 - 70 → x = 5.Hence, The fixed charge is = Rs.5 . → Charge per km is = Rs.7. And , → the charge of covering a distance of 35 km. = 5 + 35*7 = 5 + 245 = Rs.250 . Hence, the charge of covering a distance of 35 km is Rs.250. |
|
| 33. |
What istherestationships between mean median and mode |
|
Answer» Answer: the relation SHIP between MEAN ,mode ,MEDIAN are the THREE are TELL the average of the data |
|
| 34. |
Write write the following Hindu Arabic numerals in Roman numerals a)550 b)653 c)236 |
|
Answer» answer a)DL-550 b)DCLIII -653 c) CCXXXVI-236 please MARK it as the BRAINLIEAST answer and FOLLOW me |
|
| 35. |
Please solve question no.07 quickly |
|
Answer» Answer: So.... sorry.... My dear FRIEND.... This QUESTION is not of my level.... THANKS.. |
|
| 36. |
FIND THE FACTORISED FORM OF m^3+3m^2n+3mn^2+n^3 |
|
Answer» Answer: (B) (m + n)²(m + n) Step-by-step EXPLANATION: m³ + 3m²n + 3mn² + n³ = m³ + n³ + 3MN (m + n) = (m + n)³ (a³ + b³ + 3AB(a + b) = (a + b)³) = (m + n)²(m+n) Hope it helps!! Please MARK as BRAINLIEST... |
|
| 37. |
Find T.S.A. of a cone of its slant height is 21 m and diameter iof the base is 24 cm |
|
Answer» hey mate Step-by-step explanation: = πr(r+l) = π(12)(12+21) = 12π(33) = 396π = 396(3.14) = 1243.44 Hence, the answer is 1243.44m² |
|
| 38. |
10,38,04,637to the nearest crore |
|
Answer» 10,00,00,000 Step-by-step EXPLANATION: This is the answer |
|
| 39. |
Factorise :67^3+33^3-------------------------67^2+33^2-67*33 |
Answer» Question :-
Formula used :-
SOLUTION :-→ (67³ + 33³) / (67² + 33² - 67*33) USING (a³ + b³) = (a + b)(a² + b² - ab) in Numerator we get, → { (67 + 33)(67² + 33² - 67*33) } / (67² + 33² - 67*33) → (67 + 33) → 100 (Ans). |
|
| 41. |
/2=/=0. Prove |
|
Answer» Answer: 5603_=%88÷8×÷=098+86219457316=9631578 |
|
| 43. |
If A is 4×4 matrix and det(Afj A)= -27 then det A= |
|
Answer» +-(27)1/2 Step-by-step EXPLANATION: |
|
| 44. |
ClassmateDatePogoसर्वात लहान पूर्ण संख्या कोणता(whole number |
| Answer» | |
| 45. |
1. Find the surface area of a sphere of radius: (i) 14 cm (ii) 10.5 cm.2. Find the volume of sphere of radius: (i) 0.63 m (ii) 11.2 cm.3. Find the surface area of Sphere of diameter: (i) 21 cm (ii) 3.5 cm.4. Find the diameter of a sphere whose surface area is 154 cm25.The radius of a spherical balloon increases from 7 cm to 14 cm as air is pumped into it. Find the ratio of the balloon in two cases.6. Find the volume of a sphere whose surface area is 154 cm27. If the volume of the sphere is 179⅔ cm3, find the radius and the surface area.8. If the ratio of the radii of two spheres is 3:7, find (i) ratio of their volumes (ii) ratio of their surface areas.9. A hemispherical bowl has inner diameter 10.5 cm. Find the cost of tin – plating it on the inside at the rate of rs.16 per 100 cm210. A hemispherical bowl has a radius of 3.5 cm. what would be the volume of water it would contain.11. The surface area of a solid sphere is 1256 cm2. It is cut into two hemi soheres. Find the total surface area and the volume of hemisohere. Take π = 3.1412. A hemispherical bowl is made of steel, 0.25 cm thick the inner radius of the bowl is 5 cm. Find the outer curved surface of the bowl.13. A hemispherical dome of a building needs to be painted from outside. If the circumference of the base of the dome is 17.6 m. find the cost of painting it at the rate of Rs.5 per 100 cm214. A dome of a building is in the form of a hemisphere. From inside, it was white washed at a cost of Rs.498.96. If the cost of white washing is Rs.2 per square, find: (i) the inside surface area of the dome (ii) volume of air inside the dome.15. What quantity of milk in litres can a hemispherical bowl of diameter 10.5 cm. hold?16.The volumes of two spheres are in the ratio 64:27. Find the ratio of their surface areas. |
|
Answer» Answer: 1--- SURFACE AREA of SPHERE is 4πr² Step-by-step explanation: 4*22/7*14*14 2464cm2 |
|
| 46. |
Plz tell me question no. 6(a), 7(a,b) and 8(a,b). It's urgent..... |
| Answer» | |
| 47. |
Please simplify and write in exponential form. full methodplease no spams. if you dont know dont answer |
|
Answer» FOLLOW me and BRAINLIEST MARK |
|
| 48. |
Equotion32 3 + 3436 1636 |
|
Answer» Answer - 361959 Step-by-step EXPLANATION: |
|
| 49. |
3x+4y=25, 5x-6y=9 solve by substitute methode |
|
Answer» Step-by-step explanation: Given - 3x + 4y = 25 5x - 6y = 9 To Find - VALUE of x and y by substitution method. Now, = 3x + 4y = 25 = 3x = 25 - 4y
Substituting the value of x on 5x - 6y = 9 = 5(25 - 4y/3) - 6y = 9 = 125 - 20y/3 - 6y = 9 = 125 - 20y - 18y/3 = 9 = 125 - 38y/3 = 9 = 125 - 38y = 27 = 125 - 27 = 38y = 98 = 38y = y = 98/38
Now, Substituting the value of y on 3x + 4y =25 = 3x + 4(49/19) = 25 = 3x + 196/19 = 25 = 57x + 196/19 = 25 = 57x + 196 = 25 × 19 = 57x + 196 = 475 = 57x = 475 - 196 = 57x = 279 = x = 279/57 = x = 93/19 Hence, The value of x is 93/19 and The value of y is 49/19 Verification -Substituting the value of x and y on 3x + 4y = 25 = 3(93/19) + 4(49/19) = 25 = 279/19 + 196/19 = 25 = 279 + 196/19 = 25 = 475/19 = 25 = 25 = 25 LHS = RHS Hence, VERIFIED.. |
|