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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. |
4. Find the least number which must be added to 6203 to obtain a perfect squarAlso, find the square root of the number so obtained. |
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| 2. |
BTÂŁ.-+0=0 | |
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Answer» 2x^2 - x -10 = 0=> 2x^2 - 5x +4x -10 = 0=> x(2x - 5) +2(2x -5) = 0=> (x+2)(2x-5)=0=> x= -2, 5/2. |
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| 3. |
bt eySec %0 + Us&gSoâ |
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| 4. |
3.5112xy then find the value oy? |
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Answer» 2x=yx+y=180 (linear pair )x+2x=180 3x=180 x=180÷3 x =60value of y = 2×60 y=120. |
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| 5. |
Salue for xat bt y0. |
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| 6. |
4.Find the least number which must be added to 6203 to obtain a perfect squarAlso, find the square root of the number so obtained. |
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| 7. |
4.Find the smallest number by which 3645 must be divided so that it becomes aperfect square. Also, find the square root of the resulting number. |
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| 8. |
Find the smallest number by which 3645 must be divided so that it becomes aperfect square. Also, find the square root of the resulting number.4. |
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| 9. |
5 boys have 2 books each. How many booksare in all?1. |
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Answer» Overall boys will have5*2= 10 books 5 times 2 is 10 books in all |
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| 10. |
two books cost 115.50. how many books can be purchased in 41580. |
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Answer» cost two books is ₹ 115. 50 cost of one book is 115.50/2 = ₹57.75Number of book purchased using₹41580 is 41580/57.75 = 720 books |
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| 11. |
2 \times\{25 \times[(113-9)+(4 \div 2 \times 13)]\} |
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Answer» 2 × {25 × [(113 - 9) + (4 ÷ 2 × 13)]}Apply BODMAS2 × {25 × [(104) + (2 × 13)]} = 2 × {25 × [104 + 26]} = 2 × {25 × 130} = 2 × 3250 = 6500 |
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| 12. |
malETIC PROGRESS!ONS1134. How many terms of the AP:9, 17,25,must be taken to give a sum of 636? |
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| 13. |
Bt oy 3 |B - _ 3(q) 7 3 |
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Answer» {(y-1)/7} - {(y-3)/3} =3 3y-6-(7y-21)=3(21) 3y-6-7y+21=63 -4y=63+6-21 -4y=48y=-12 3y-6-7y+21=21*3-4y+15=63-4y=63-15=48Y=48/-4=-12 |
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| 14. |
If a+bt 0, -3,- and c7 then theangle between a and b is |
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| 15. |
EXERCISE 3.5. Which of the following statements are true?(a) Ifa number is divisible by 3, it must be divisible by 9.(b) If a number is divisible by 9, it must be divisible by 3.(c) A number is divisible by 18, if it is divisible by both 3 and 6.(d) If a number is divisible by 9 and 10 both, then it must be divisible(e) Iftwo numbers are co-primes, at least one of them must be prim() All numbers which are divisible by 4 must also be divisible by 8. |
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| 16. |
10What must be added to 7d to get 1What must be added to 7to |
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Answer» x+43/6=100/9x=100/9-43/6 =(200-129)/18 =71/18 |
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| 17. |
What must be added to 2xe3-4x +9 to get 5xe 13?What must be subtracted from 4x to get 6xe - 25x-1. |
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| 18. |
189: 273:: 153:? |
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Answer» 189*? = 273*153 => ? = 273*153/189 = 221 explain please |
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| 19. |
(015(83+273)113 4 |
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| 20. |
the denominator of a rational number is greater than its neumoratar by 8 if the neumrator is increased by 17 and the Deneumrator is decreased by 1. the number of 10 is 3/2 find the rational number? |
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Answer» thanks |
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| 21. |
8x3+y3+273 -1 8xykz का गुणनखण्ड कीजिए। |
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| 22. |
Since, - 45 < -28, therefore,rksheet 6ermine which rational number is greater in each caBT333 |
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Answer» plz click a clear image |
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| 23. |
(xxi) x-(J3-2)x+273 |
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| 24. |
.Teaneéoflvaiosdtatangle of depression of the foot of the chimney from the top of the tower is 30 ftheight of the tower is 40 m, find the height of the chimney. According to poltincontrol norms, the minimum height of a smoke emitting chimney should be 100m.State if the height of the above mentioned chimney meets the polution norms. Whatvalue is discussed in this question?[CBSE 2014 556 |
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| 25. |
tante trom the person to Rajendar is 500/2 mEXERCISE 12.1A tower stands vertically on the ground. From a point which is 15 meter away from thefoot of the tower, the angle ofelevation of the top of the tower is 45째. What is the heightof the tower?A tree breaks due to storm and the broken part bends so that the top of the tree touchesthe ground by making 30째 angle with the ground. The distance between the foot of thetree and the top of the tree on the ground is 6m. Find the height of the tree before fallingdown. |
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Answer» AB = ? tan 45 = AB/15 1 = AB/15 AB = 15M |
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| 26. |
after 249 | 2 5 |
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| 27. |
-t el vजम 3y=113R2x— 4y =249 7 कीजिए और T o’ T T ज्ञालिए y=mx+3 हो\ |
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Answer» 2x + 3y = 11........(1)2x - 4y = -24........(2)(1)-(2);7y = 35y= 5then x = -2y = mx + 35 = -2m + 3m = -1 |
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| 28. |
6. If < A and < B are acute angles such that cos A=cos B, then show thatA=LB. |
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| 29. |
Neelam's mother had 249 empty tins. She sold185 of them. How many empty tins were notsold? |
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Answer» Number of empty tins = 249 Number of empty tins sold = 185 Number of empty tins not sold= 249 - 185= 64 |
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| 30. |
1. Identify a Rational number among the following numbers.2+12, 2n/2, 0 and Ď |
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Answer» π is a rational number because it's value is not fixed |
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| 31. |
iple choice type questionsThe ratio 5 :4 expressed as a percent equalsA) 12.6%B)40%C) 80% |
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| 32. |
Multiple choice questionsThe perimeter of a triangle field is 144 m and ratioof the sides is 3:4 5. Then the area of the field is |
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Answer» thank you |
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| 33. |
137. tan(cotx) + cotl(tanx) =tan |
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Answer» it is wrong questions x = pi/2 is correct angle. x=pi/2 is correct angle x=pi/2 is correct x=pi/2 is correct angale x = π/2 is the correct answer x=π/2 is the correct answer x=π/2 is correct answer by the question x=π/2 is the best answer X=π/2 is the right answer X=pi/2 is correct angle x = 3/8 *pi is the correct answer...... X=pi/2 is correct angle ok x = pi/2correct answer Iska man pai bta 2 aayega π-2x is correct answer X=π/2 is correct answer when x=3×pi/8 is the correct answer 3π/8 is correct answer tan-1(tanπ/2-x)+cot-1(cotπ/2-x)π/2-x+π/2-xπ-2x=π/43π/4=2xx=3π/8 x=π/2 is right answer answer is ,x=pi/2 angle x =π\2 in the correct answer hai x=pi/2 is correct angle answer x=pi/2 is write and good day☀ 0 is the right answer x=π÷2 is right answer x=pi/2 is the correct answer x=pi/2 is correct X=π/2 is correct answer x= this question answer is 90* x=π/2 ans hoga h X-pi/2 correct the answer it is correct. pi / 2 the value of x is 135/2 correct answer is x=10/2 π/2 is correct angle Pi/8 is right answare x=π/2 is the right answers |
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| 34. |
- Identify the greater rational number in the given pairs. |
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| 35. |
UU989999999990eaeesseeeeSECTION-A1. Identify a rational number among the followving numbers:V2,0.2020020002.. t, 0.534534534...0 |
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Answer» 0.534534.... is a rational as it is repeating after three period. |
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| 36. |
Q11: Write one rational number and one irrational number between 2 & 3. |
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Answer» Thanks |
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| 37. |
25) Write one rational number between |
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Answer» 1/9×2/2=2/182/9×2/2=4/18rational number between 2/18 and 4/18 is 3/18. 1/9 + 2/91/2(1/9 + 2/9)1/2(2+4/9)1/2×6/91/3 |
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| 38. |
6. Find one Irrational and one rational number between 2 and v5 |
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Answer» one. method to find irrational no. is make 2 in root it is root 4 and now find root |
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| 39. |
)Find the missing number:4(1255(182[Hint : Multiply the outside numbers and divide by 10.)750Corrections |
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Answer» 16 is the correct answer please like my answer The correct answer is 16. The answer of this question is5 into 2 into 8 into 2 divided by 10= 16 by multiplying outside number it will be 160 and by dividing by 10 answer will be 16 |
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| 40. |
137 \text { and } - 354 |
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Answer» 137 + (-354) = -217 |
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| 41. |
2. The angle of elevation of the top of a building from the foot of the tower is 30en tetowerandamgle of clevation of the top of the tower from the foot of the building is 6o1 50 m high, find the height of the buildinging is 0 If thette gach other en either side of the rood |
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Answer» 1 2 3 |
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| 42. |
21. If Ala, b, e, dj and the function f-a,b).lb, d).(c. a),(d,e). Writef(N.C.E.R.T. Exemplar Problem |
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Answer» IfA={a,b,c,d}A={a,b,c,d} f={(a,b),(b,d),(c,a),(d,c)}f={(a,b),(b,d),(c,a),(d,c)} we definef−1={(b,a),(d,b),(a,c),(c,d)}f−1={(b,a),(d,b),(a,c),(c,d)} (fof−1)(a)=f(f−1(a))(fof−1)(a)=f(f−1(a)) =f(c)=f(c) =a we see that (fof−1)(x)=x(fof−1)(x)=xfor all elements ofx∈{a,b,c,d}x∈{a,b,c,d} |
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| 43. |
249-6 |
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Answer» The anawer to this question is 3. the answer to this question is 145 that is(2+48+95=145) The answered is this question is 3 |
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| 44. |
249y? - o |
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Answer» y²-49/64y²=7²/8²so y=7/8 y² - 49÷64 y²= 49÷64 y=7÷8 y^2 - 49/64 = y^2 - (7/8)^2= (y + 7/8) (y - 7/8) |
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| 45. |
N{. X9 4+ X6 (1)\5 SRR ~TE N S o e O e |
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Answer» 9x² + 6xy + y² 9x² + 3xy + 3xy + y² 3x ( 3x + y) + y ( 3x + y) (3x+y) ( 3x + y) ( 3x + y)² |
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| 46. |
EXAMPLE 6 Find the zeros of the polynomial x?+-corfficients and acros of the polynomial-2and verify the relation between theINCERT EXEMPLARI |
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| 47. |
E 803Soore 40SAMAGRA SHIKSHA. KERALASECOND TERMINALEVALUATION - 2019MATHEMATICS - VIHTime 19 HoursInstructions. Read the instructions before answering theGive explanations wherever necessaryFirst 15 g utes time is cool-off timeAnswer 4 Questions from 1 to n questa carries1 In the figure is the centre of the candle LA-30b) AOB |
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Answer» <AOB 120 answer hoga. <AOB 120 is the correct answer |
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| 48. |
(c) The y-axis is the line of symmetry for the figure ABCD, where A. B have coordinates (3. o) (-3, 4)131respectively0) Find coordinates of C and D(i) Name the figure ABCD and find its area.141ICSE Self-Study in Mathematics 10(384 |
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Answer» Assuming C and D are reflections of A and B(respectively) Therefore A on reflection by Y-axis = C co-ordinates= (-(3), 6)= (-3,6) Therefore B on reflection by Y-axis = D co-ordinates= (-3, -(4))= (-3,-4) Figure ACBD is a rectangle. (you need to plot the points on a graph) Area = length*breadthOn observing graph, length = 6 unitsbreadth = 2 units Therefore, area = 6*2 = 12 sq.units |
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| 49. |
2) Alok worked on a set of mathematicsproblems for 20 minutes and finished 15 ofit. He then called Asha. Working togetherthey finished the complete set in 22minutes. How long would Alok and Ashahave taken to finish the set individually?4 |
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Answer» Alok has taken 20 mins to solve 4/15 problems. Then he needs 5 mins to solve a single problem. Asha comes and helps to solve the left 11/15 problems in 22 mins together. Each problem is given 2 mins. The effort (5 mins) of each math of Alok is reduced by Asha by 3 mins, i.e., 5-2=3. So Asha can solve a single math in 3 mins. So, Alok would take 75 mins to solve the complete set alone and Asha alone would take 45 mins to solve the whole set. Like my answer if you find it useful! |
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| 50. |
Alok worked on a set of mathematics4problems for 20 minutes and finished 1 ofit. He then called Asha. Working together,they finished the complete set in 22minutes. How long would Alok and Ashahave taken to finish the set individually? |
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Answer» Alok has taken 20 mins to solve 4/15 problems. Then he needs 5 mins to solve a single problem.Asha comes and helps to solve the left 11/15 problems in 22 mins together. Each problem is given 2 mins. The effort (5 mins) of each math of Alok is reduced by Asha by 3 mins, i.e., 5-2=3.So Asha can solve a single math in 3 mins.So, Alok would take 75 mins to solve the complete set alone and Asha alone would take 45 mins to solve the whole set. |
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