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. |
7. The following table gives the number of different fruits kept in a hamperType of fruit Mangoes Apples Oranges CoconutsPomegranatesNumber263021Represent the above data by a pie chart.Hint. Total number of fruits 90. |
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| 2. |
P(B)Ex, (3) A eand is drawn from o well shufled pask of S2 playing eards. Find the(i) a face cant6card is drawn from a well shuftled pack of 52 pprobability of each event. The card drawn is (i) a red catrt |
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Answer» i) number of red cards = 26. Probability of a red card = 26/52 = 1/2ii) numbe of face cards = 12Probability of a face card = 12/52= 3/13Please hit the like button if this helped you |
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| 3. |
5* = x²-1. The given equation will have : |
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Answer» there is no solution for the above equation because always 5^x will be greater than x^2-1. |
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| 4. |
реореж96рео (- 1410%) |
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Answer» cosec(-thita) = -cosecthita (thita = acute angle) Cosec(-1410) = -cosec1410 = -cosec(360*3+330) = -cosec(330) = -[-cosec(270+60)] = +[sec60] = +2 |
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| 5. |
given equation.3-3x-7x+ 2 2x-3Solve: |
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| 6. |
The sum of two numbers is 2490. If65% of one number is equal to 8.5%of the other. Then the numbers are:a) 1411, 1079 b) 1410, 1079c) 1411, 1078 d) 1410,.1078 |
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Answer» Suppose numbers are x and y x + y = 2490 6.5% of x = 8.5% of y 6.5x = 8.5y 13x = 17y x = 17y/13 17y/13 + y = 2490 30y/13 = 2490 y = 83×13 = 1079 x = 2490 - 1079 = 1411 If you find this answer helpful then like it. |
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| 7. |
Ex. 14. cosec(-1410) |
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| 8. |
\operatorname { cosec } ( - 1410 ^ { \circ } ) |
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| 9. |
Find the value of trigonometric function cosec(-1410°) |
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| 10. |
दि पहले / प्राकृत संख्याओं का योग § 1+ पहले # प्राकृत संख्याओं के वर्गों का योग 5, तथा पहले ॥प्राकृतसंख्याओंहों का योग 55 हो, तो सिद्ध कीजिए कि-- मै953 =84(1+8S,) (NCERT) |
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| 11. |
1o If s, S and S, are the sum of firstnatural numbers, their squares and theircubes respectively then show that9S22-s, (1+8S,). |
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| 12. |
Joseph kept 26 eards in a cap, bearing one English alphabet on each card. Ongcard is drawn at random. What is the probability that the card drawn is a vowedcard ? |
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Answer» No. of event= 5 ( no. of vowel)Total event=26P(E)=5/26 |
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| 13. |
) Total surface area of a solid hemisphere is 675Ď sq. cm Find the curved surface area of ttie solidhemisphere |
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| 14. |
ULTEUTUthe value of b for which (2x + 3) is a factor of 2x+ 9x2-x-b.ia |
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| 15. |
-an SsDAcles ttie, tha vetticalamgle |
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Answer» Y u had written x 2 times because it is isosceles triangle..so 2 angles will be same |
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| 16. |
Eu.mple is ; Solve the following paa esequitions by ted cÇ4 thrm o a p |
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| 17. |
'i1.Ifthettieratio of A.M. and G.M. of two positive numbers a and b is m : n, then prove that:hunbels.prov ethat:a:b-(m+vm.nz)(m- |
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Answer» AM of number a and b = (a + b)/2 GM of number a and b = √ab Here, AM : GM = m : n (a + b)/2 : √ab = m : n (a + b)/2√ab = m/n Applying componendo and dividendo rule,(a + b + 2√ab)/(a + b - 2√ab) = (m + n)/(m - n)(√a² + √b² + 2√ab)/(√a² + √b² -2√ab) = (m + n)/(m - n) (√a + √b)²/(√a - √b)² = (m + n)/(m - n) take square root both sides,( √a + √b )/(√a - √b) = √(m + n)/√(m - n) again applying componendo and dividendo,( √a + √b + √a - √b)/(√a + √b - √a + √b) = {√(m + n) + √(m - n)}/{√(m + n) - √(m - n) }2√a/2√b = {√(m + n) + √(m - n)}/{√(m + n) - √(m - n) }√a/√b = {√(m + n) + √(m - n)}/{√(m + n) - √(m - n) }taking square both sides, a/b =[{√(m + n) + √(m - n)}/{√(m + n) - √(m - n) }]²a/b = {m + n + m - n - 2√(m² - n²)}/{m + n + m - n -2√(m² - n²)}a/b = {2m + 2√(m² - n²)}/{2m - 2√(m² - n²)}a/b = {m + √(m² - n²)}/{m - √(m² - n²)} hence, a : b = m + √(m² - n²) : m - √(m² - n²) |
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| 18. |
(i) 482 +8s |
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Answer» 4s(s+2) that is a answer 4s^2+8s4s(s+2) is the factor it is the right answer of x 4s(s+2) is the correct answer 4s² + 8s= 4s(s+2)is the factor of the given equation. 4s(s+2) is the best answer 4s(s+2)that is a correct answers 4s(s+2) is the best answer 4s(s+2) is the correct answer 4s (s+2) is the correct answer. 4s(s+2)is is the best answer 4s(s+2).....right answers..... 4S ( S + 2 ) is answer 4s(s+2) is the correct answer answer hoga 4s(s+2) it's the answer 4s(s+2) is the correct answer 4s(s+2) 4s=0 s+2=0 s=0/4. s= -2 s=p |
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| 19. |
4. Locate V8 on the number line. |
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| 20. |
14. Locate V8 on the number line. |
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| 21. |
8s. Find the Painil, it the compounannuall atinterest cothe |
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Answer» thanks |
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| 22. |
How to know that any given equation of ellipse is of vertical or horizontal ellipse? |
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Answer» Ans :- Wheneverthelarger number (a2) is underneaththex, then it isa horizontal ellipse. (You can remember this becausethex-axis isthe horizontal axis.) 2)Tell ifthisellipseishorizontal orverticalandfindits center point,a, and b. Now we need to decide if thisellipseisvertical or horizontal. |
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| 23. |
-9x2 x=-2 |
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Answer» -9×2x=-22x=-2/-9x=0.222/2x=0.11 |
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| 24. |
(9x2-4) Bx + 2) |
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Answer» 9x^2 - 4 = (3x+2)(3x - 2)So, (9x^2 - 4)/(3x+2)= [(3x+2)(3x-2)] / (3x +2)= 3x - 2 PLEASE HIT THE LIKE BUTTON |
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| 25. |
factorisation of 9x2-64 |
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Answer» 9x^2-64(3x)^2-(8)^2(3x+8)(3x-8)thanks |
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| 26. |
1. 9x2-16y |
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Answer» 9x^2-16y^2= (3x)^2-(4y)^2 Formulaa^2-b^2= (a+b)(a-b)Herea= 3xb= 4ySo(3x+4y)(3x-4y)Please like the solution 👍 ✔️👍 why 9x^2 becomes 3x^2 |
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| 27. |
Find the difference in the place value of both 8s in number 819802. |
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Answer» 800000 - 800 = 799,200 wrong answer |
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| 28. |
cos(e^x %2B log(x, 10)) |
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| 29. |
factories 3x2 -3x |
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Answer» =3x2-3xFactorise, take 3x common=3x(x-1) |
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| 30. |
(४) का मान होगा न Rx=(3+ 18) हो तो (४ * 1 |
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| 31. |
what is factories |
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Answer» Ans :- A factory or manufacturing plant is an industrial site, usually consisting of buildings and machinery, or more commonly a complex having several buildings, where workers manufacture goods or operate machines processing one product into another. |
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| 32. |
Factorise :Y. Rx - 16 |
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Answer» 8(x+2y) is the answer 8 × x +8×2×y =8(x+2y) |
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| 33. |
थे रारहरगमटे| र्प्ग्ब उप ०्ण्न्ट बनाओ (्ण| == x\rx-cot(Z गा न |
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Answer» LHS = cos(3π/2 + x).cos(2π+x)[cot(3π/2 -x) + cot(2π+ x) ] we know, cos(3π/2 + x) = sinx cos(2π+x) = cosx cot(3π/2 -x) = tanx cot(2π+x) = cotx, use this here, = sinx.cosx[tanx + cotx ]= sinx.cosx [sinx/cosx + cosx/sinx]= sinx.cosx[(sin²x + cos²x]/sinx.cosx = (sin²x + cos²x ) = 1 = RHS |
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| 34. |
10. Fnd the roots of the equationrx-3 3 0,3) |
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Answer» x-1/x-2+x-3+x-4 =3 1/3x-1/3x-9 = 10/3x-1/3(x-3) =10/3x-1/x-3 = 10x-1= 10(x-3)x-1 = 10x-3010x-x = 30-19x= 29x = 29/9 |
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| 35. |
0.2...600 72- ठ32 |
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Answer» 1. cos(A+B) = cosA cosB - sinA sinB.2. cos(A - B) =cosA cosB + sinA sinB.3. sin(A+B) = sinA cosB +cosA sinB.4. sin(A - B) = sinA cosB - cosA sinB. lets say A+B = C and A-B = DAdd equations of number (1) and (2) , i.e. (1) + (2) ->cos C + cos D = 2 cos [(C+D)/2 ] cos [ (C-D)/2 ]and Subtract equation of number (4) from (3), i.e. (3) - (4) ->sin C - sin D = 2 cos [(C+D) /2 ] sin[(C- D) /2] so cos 7x + cos 5x = 2 cos(12x/2) cos ( 2x/2)and sin 7x - sin 5x = 2 cos(12x/2) sin ( 2x/2 ) (cos 7x + cos 5x)/sin 7x - sin 5x = cos(x)/sin(x)= cot(x). |
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| 36. |
d)Factorise the expression and divide 12xy (9x2-16y2) ÷4xy (3x+4y) |
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Answer» 12xy(3x-4y)(3x+4y)------------------------------4xy(3x+4y) =3(3x-4y) |
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| 37. |
Solve 9x-5(2x-3) = 1-2x and verify the result. |
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| 38. |
9x2+24xy+16y2 |
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Answer» 9x²+24xy+16y² = (3x)²+2*(3x)*(4y) +(4y)²= (3x+4y)² |
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| 39. |
2.The eccenticity of the ellipse 9x2 +16y2 = 144 |
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| 40. |
11.Show that (4/3-3/4y)2+2xy= 16/9x2 +9/16y2 |
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Answer» thanks |
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| 41. |
14. If 3x + 4y = 16 and xy = 4; find the value of9x2 16y2mher T |
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Answer» Given (3x + 4y) = 16 andxy = 4 (3x + 4y)^2 = 9x^2 + 16y^2 + 24xy 16*16 = 9x^2 + 16y^2 + 24*4 9x^2 + 16y^2 = 256 - 96= 160 |
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| 42. |
Two numbers are in the ratio 5:6.8subtracteted from each of the numbers, the 12,mes 4:5. Find the numbers.[NCERT Exemplar |
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Answer» Let the two no be x and ytherefore x / y = 5 / 66 * x = 5 * y6 * x - 5 * y = 0 * 5 30 * x - 25 * y = 0..................(i)also (x - 8)/(y - 8) = 4 / 55 * x - 40 = 4 * y - 325 * x - 4 * y - 8 = 0 *630 * x - 24 * y - 48 = 0 .....................(ii)subtracting (i) from (ii)y - 48 = 0y = 48putting y = 48 in x/y = 5/6x/48 = 5/6x = 5 * 48 / 6x = 5 * 8x = 40therefore the two numbers are 40 and 48 Like my answer if you find it useful! I don't get it pls explain deeply |
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| 43. |
10. In Fig. 4.103, III m and nil p. If Z1 = 60°, thenprove that 22 = 2 21.(CCE 16] |
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Answer» angle 1 and angle 3 are equal because they are corresponding.And angle 3 and 2 are Co-interior so angle 3 + angle 2=180* . so angle 2 = 120* .Half of 120* is 60*(angle 1) |
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| 44. |
factories x³_3x²_9x_5 |
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| 45. |
factories 6xy-4y+6-9x |
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Answer» 6xy - 4y + 6 - 9x= 6xy - 4y - 9x + 6= 2y(3x - 2) - 3(3x - 2)= (2y - 3)(3x - 2) |
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| 46. |
factories 4psqare - 9qsquare |
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Answer» 4p²-9q²(2p)²-(3q)² a²-b²=(a-b)(a+b) (2p)²-(3q)²=(2p+3q)(2p-3q) |
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| 47. |
17. Solve for x.(9x 18)° |
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Answer» The given figure is regular pentagon. So, all angles must be equal. We know sum of all angles in pentagon is 540°. 5 × ( 9x - 18°) = 540° 9x - 18° = 540°/5 9x - 18° = 108° 9x = 108° + 18° 9x = 126° x = 126°/9 x = 14° So, each angle is 9x - 18° = 9 ×14 - 18 = 108° Please hit like if you find my solution useful |
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| 48. |
solve :9x+x-3x |
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Answer» 7x is the best answer 7x is the correct answer (9+1-3) x = (10-3)x = 7x is the proper answer 7x is the proper answer 9x+x-3x = 10x- 3x= 7x |
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| 49. |
). Solve the following -(ii) 45x2+9x |
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Answer» hit like if you find it useful thanks hit like if you find it useful |
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| 50. |
19. The polynomials 9x + 3x2 - 13 and 2x? -5x + a are divided by (x - 2). The remainder ineach case is the same. Find the value of a. |
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