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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. |
44+44 |
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Answer» it's answer is 88...... 88... is the answer |
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| 2. |
44 +44 |
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Answer» the answer of 44 + 44 is 88. |
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| 3. |
Substract4ab - 3bc from ab- bc |
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Answer» a) ab-bc-4ab+3bc = -3ab+2bc all and full answer please b,c,d please all answers fast |
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| 4. |
13, हिघात बहुपद -2 के शून्यक हैं -4Zeros of the quadratic polynomial x2- 2 are -(A) 2.2 : - (B)© —2,—V2 D) |
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| 5. |
. Find the nature of product (v2 -13)03+42) |
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Answer» it is in the form of (a+b) (a-b)so it will be a² - b²(√2*√2-√3*√3)2-3=-1 |
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| 6. |
V2-2y-13-2 |
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Answer» v² - 2v - 13 = 2 v² - 2v - 15 = 0 v² -5v + 3v - 15 = 0 v ( v - 5) + 3 ( v - 5) = 0 ( v + 3) ( v - 5) = 0 So, v = 5 and -3 |
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| 7. |
v2-2v-13 2 |
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Answer» v² - 2v - 13 = 2 v² - 2v - 15 = 0 v² -5v + 3v - 15 = 0 v ( v - 5) + 3 ( v - 5) = 0 ( v + 3) ( v - 5) = 0 So, v = 5 and -3 |
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| 8. |
After rationalizing the numerator ofV2 the denominator in simplest form is:23(A) 13(3 - 2) (B) 3-3-2 (C)3 + 76 (D) of these |
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Answer» none of these is the correct answer |
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| 9. |
Simplify. 3 X |
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| 10. |
(x-1)(x-2)(3x-2)(3x+1)=21 |
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Answer» Please mention the complete details of the question! |
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| 11. |
Prove hedto Le 2 |
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| 12. |
Prove that v3 is irrational. |
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Answer» Given √3 is irrational number. Let √3 = a / b wher a,b are integers b ≠ 0we also suppose that a / b is written in the simplest form Now √3 = a / b ⇒ 3 = a²/ b² ⇒ 3b²= a² ∴ 3b²is divisible by 3 ⇒ a²is divisible by 3 ⇒ a is divisible by 3 ∴ let a = 3c a²= 3c² ⇒ 3b²= 9c² ⇒b²= 3c² ∴ 3c² is divisible by 3 ∴ b² is divisible by 3 ∴ b is divisible by 3 ∴a are b are divisible by 3this contradicts our supposition that a/b is written in the simplest formHence our supposition is wrong ∴ √3 is irrational number. |
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| 13. |
Prove that v3 is irrational |
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| 14. |
Prove that V2 + V3 is irrational |
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Answer» Thank you |
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| 15. |
1. Prove that V3 is irrational |
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Answer» √3 is an irrational number becoz it's not a perfect sq of any. root 3 is irrational number because it is not the square of root 3 is irrational number because it is not a perfect square and if we will make its root then it will come in decimal |
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| 16. |
What should be added to a^{2}+2 a b+b^{2} \text { to get } 4 a b+b^{2} ? |
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Answer» required polynomial=4ab+b^2-a^2-2ab-b^2=2ab-a^2 |
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| 17. |
simplify 3+√2÷√5-2 |
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Answer» 3√5+2√2+√10+6 /3 is the correct answer of the given question |
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| 18. |
By what number should 6(2/9)be multiplied to get 4(4/9) |
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Answer» Let the number be x. = 56 / 9 * x = 40 / 9 = x = 40 / 9 * 9 / 56 x = 40 / 56 = 5/7. |
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| 19. |
34. The average speed of a car is 20km/hr more than the average speed of a Bus. Ifthe car takes 4 hours less than the bus to cover a distance of 300 km. Find theaverage speed of the car and the bus. |
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Answer» Let b be the speed of the bus. Then the car is b+20. So: 300/b - 4=300/b+20 300(b+20) -4b²-80b=300b 4b²+80b-6000=0 b²+20b-1500=0 (b+50)(b-30)=0 b=30 The bus goes 30 kph; the car goes 50 kph |
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| 20. |
Eg: 1) A train runs between two stations A andB, while going from A to B its average speed is100 km/hr. and when coming back from B to Aits average speed is 150 kmph. Find the averagespeed during the whole journey? |
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| 21. |
4+16. Simplify3-2 V3+V213+275-2by rationalizing the denominator.Yan |
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Answer» V3 - V2/ V3+V2 x V3 + V2/ V3 + V2 = ( V3)^2- ( V2)^2/(V3 + V2)^2 V3 -V2/ V3 +V2 x V3-V2/ V3- V2 = (V3)^2-( V2)^2/ ( V3+V2)^2= 3-2/(V3 + V2)^2=1/(V3+V2)^2; V3+V2/ V3-V2 x V3 - V2/ V3 - V2 = ( V3)^2-( V2)^2/( V3-V2)^2= 1/( V3 - V2)^2; 1/ ( V3+V2)^2+ 1/ ( V3 - V2)^2= = 1/(3+2+2V6 +3+2-2V6)= 1/(5+5)= 1/10 |
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| 22. |
ORSimplify 3-2by rationalizing the denominato |
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| 23. |
Simplify:(3 x+5 y)^{2}+(3 x-5 y)^{2} |
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Answer» wrong (3x+5y)² + (3x-5y)²9x² + 25y² + 30xy + 9x² + 25y² - 30xy18x² + 50y² |
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| 24. |
is inationalprove that V3-2 |
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| 25. |
| +£ s| 1 शायर 10 शोर । हू (2005| Mfié.mueflum&elzgm‘mim| Blhe DED ISP 3K b lelren 15 °T ke |
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Answer» माना पहली 5x तथा दूसरी xnow5x+21 = 2(x+21)5x+21= 2x+423x= 21x= 7and 35 |
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| 26. |
Q1.Find the value of V3-2 |
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Answer» 0.333 is the correct answer. 0.333 is the best answer. 333 is the answer of this question 0.333 is the best answer 0.3333333333333333333333 the right answer is 0.333 . 333 best answer for given question accept as best please 1/3 is the correct answer 1/3 is the correct answer 1/3 is the correct answer 0.333333333333333333333333333 |
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| 27. |
6. Prove v3+2 +1 is irrational. |
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Answer» Let √3 + √2 + 1 be rational √3 + √ 2 + 1 = r , r be any rational sqauring both sides (√3 + √2)² = (r - 1)² 3 + 2 + 2 √6 = r² - 2r + 1 √6 = (r² - 2r - 4)/2 So, contradiction to our assumption as LHS is irrational and RHS is rational. So, √3 + √2 + 2 is irrational |
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| 28. |
Simplify : 3 \sqrt{45}-\frac{5}{2} \sqrt{\frac{1}{3}}+4 \sqrt{3} |
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| 29. |
8.whatshouldbeaddedtog-togetMy)get 4:/2ded toto |
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Answer» (1/2+1/3+1/5) + x = 4 => x = 4-(1/2+1/4+1/5) = 4-(15+10+6)/30 = 4-(31/30) = (120-31)/30 = 89/30 |
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| 30. |
दाहरण Tहुरण 1 आ। |=} l2 jकामुख्य मान ज्ञात कीजिएIvLR |
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Answer» मानाY = sin⁻¹( 1/√2)SinY= 1/√2SinY= Sin(π/4)Y= π/4 अतः यह मुख्य मानं होगा |
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| 31. |
Simplify the expression:-[-2 x-\{3 y-(2 x-3 y)+(3 x-2 y)\}+2 x] |
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| 32. |
Simplify the given expression: (3 + √3)(2 +√2) |
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Answer» thanku |
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| 33. |
I. Simplify:(3 \sqrt{2}+2 \sqrt{3})^{-} |
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Answer» 18+12+12√630+12√6 |
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| 34. |
| &) LR }, V% ) |
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Answer» π\6 is correct answer लिखा का हैyar pata nahi cal raha h |
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| 35. |
Q24. A flagstaff is mounted on the top of a tower. From a point on the ground,20m from the foot of the tower, the angles of elevation of the top and the bottom ofhe flagstaff are 60° and 30° respectively. Determine the height of the tower. |
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| 36. |
Iy,it lg easier to stop a tennis ball thano. Explain the meaning of the following equation:where symbols have their usual meanings |
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Answer» Wrong it shows momentum |
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| 37. |
: 2 x ^ { 3 } + 2 y ^ { 3 } + 2 z ^ { 3 } - 6 x y z = ( x + y + z ) [ ( x - y ) ^ { 2 } + 1 y - z ^ { 2 } + ( 2 - x ) ^ { 2 } ] |
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Answer» wrong it is prove that is another Given solution is correct |
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| 38. |
\frac{\left(x^{2} y^{2}\right)^{3}+\left(y^{2}-z^{2}\right)^{3}+\left(z^{2}-n^{2}\right)}{(x+y)^{3}+(y-z)^{3}+(2-n)^{3}} |
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| 39. |
Exercise 1.1Give any two examples for linear equations in one variabl |
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Answer» x - 2 = 7Given, x – 2 = 7By adding 2 to both sides, we getx – 2 + 2 = 7 + 2⇒ x = 7 + 2⇒ x = 9 y + 3 = 10Given,y + 3 = 10By subtracting 3 from both sides, we gety + 3 – 3 = 10 – 3⇒ y = 10 – 3⇒ y = 7 |
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| 40. |
:\left|\frac{ |x^{2}-y^{2} \rangle^{3}+\left(y^{2}-z^{2}\right)^{3}+\left(z^{2}-x^{2}\right)^{3}}{(x-y)^{3}+(y-z)^{3}+(z-x)^{3}}\right. |
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| 41. |
हे... 0 + ७००४i = P then, prove that = 3P“+1 |
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Answer» Like my answer if you find it useful! |
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| 42. |
Prove that p tvÄ is irrational, where p. q are primes |
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| 43. |
के कि S हि 3221 S1 () 2491 ) 2l L1 ()Yorhonh ) Koobt ppinie phs NS 2l 8 a2 154 2202 6 Yoo 220 71 Diae e Te ue 2R E i B Jah DRIty g CADERIBEEEE SS R RIS |
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Answer» Ans :- Option (a) is correct. 17 meter Let a=12m b=9m c=8m So l=√a²+b²+c² l=√(12)²+(9)²+(8)² l=√144+81+64 l=√289 l=17m |
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| 44. |
In the figure, ZCABLACB20° and AB L CD, then findolution: |
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Answer» angle acb = 180 - 90 - 20 = 70° 90 + 20 +angle c=180ag c =180-110 =70 |
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| 45. |
Lr see2l |
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| 46. |
nave taken o hours more than the scncdthtu nn . 1 no … 'A bird is sitting on the top of a tree. which is 80 m high. The angle of elevation of the bird. fromon the ground is 45. The bird flies away from the point of observation horizontally and remainsa constant height. After 2 seconds, the angle of elevation of the bird from the point of observation27:a pointbecomes 30° Find the speed of flying of the bird.nurl to the ratin of the squares on the |
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Answer» is,n rational number ? |
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| 47. |
2where the symbols have their usual meanings.olution : (a) F = Gni |
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Answer» F = G m1*m2/r^2 F = gravitational force between two objects (N = kg. m/s^2 G = gravitational constant (G = 6.67 x 10^-11 N.m^2/kg^2 ) m1 = mass of the first object (kg) m2 = mass of the second object (kg) r = distance between objects (m) |
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| 48. |
4. Find the penimeter of these shapes :5.5 cm |
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| 49. |
x +y/xy =2; x -y/xy =6 |
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| 50. |
l'e circles wtthhe samne centre are called eunsameEXERCISE 181. Take a point O on your notebook and draw circles of radi4 cm, 5.3 cm and 6.2 cm, eachhaving the same centre O |
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