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If tan α + cot α = 2, then tan²⁰α + cot²⁰α =

(a) 0 (b) 2 (c) 20 (d) 220 Solution: Given tan α + cot α = 2 => tan α... View Article

Solution: Prime factorization of 3240 = 23 × 34 × 51 Here the exponents are 3, 4 and 1 The... View Article

Solution: Area of square field = 9 hectare = 90000 m2 Let a be the side of square. a2 =... View Article

(a) 65 (b) 55 (c) 70 (d) 57 Solution: 2, 5, 10, 17, 26, 37, 50, __ Observe the series.... View Article

(a) 20 (b) 80 (c) 360 (d) 120 Solution: LCM of 4, 5 and 6 = 60 Common multiples are... View Article

Solution: (a) 18.312 = eighteen point three one two (b) 22 .05 = twenty two point zero five (c) 0.987... View Article

Solution: Given y = x2 + 4x + 5 dy/dx = 2x+4 dy/dx = 0 => x = -2 When... View Article

Solution: Let the price of the article before adding GST be x. So x + (18/100)x = 1239 => x... View Article

(a) 336 (b) 246 (c) 346 (d) none of these Solution: Given x+y+z+u+t = 20 ..(i) x+y+z = 5 ..(ii)... View Article

Solution: We know that the standard deviation of n observations x1, x2, …xn is given by the formula σ =... View Article

(a) greatest value of |a+b| is 5 (b) greatest value of a+b is 4 (c) greatest value of a+b is... View Article

(a) -b/a, c/a (b) -b/c, a/c (c) a/b, -c/b (d) none of these Solution: Given polynomial is ax2+bx+c = 0... View Article

(a) 154 (b) 300 (c) 144 (d) none of the above Solution: Prime factorisation of 616 = 23 × 71... View Article

(a) 1 (b) 3 (c) 0 (d) 2 Solution: Given a(5, 6), b(2, -3), c(-3, 3) and d(6, x). When... View Article

(a) 1 (b) 4 (c) -4 (d) 2 Solution: Let the point be A(-2, 6) and B(4, 8). Other two... View Article

Solution: Total length of wire = 7/8m Length of one piece = 1/4m Length of remaining piece = 7/8 –... View Article

a) g/3 b) 5g/2 c) 2g/2 d) 2g/5 Answer: d) 2g/5 Solution: aA = (aB + 0)/2 2aA = aB ——(1)... View Article

a) KA = KB b) KA ≠ KB c) KA < KB d) KA = 2KB Answer: b.c Solution: Kinetic energy E=L2/2I... View Article

a) 2.23 x 10-6 m3/s-1 b) 6.4 x 10-6 m3/s-1 c) 12.6 x 10-6 m3/s-1 d) 8.9 x 10-6 m3/s-1 The correct answer is c) 12.6... View Article

(a) (A/B) lives closer to the school than (B/A) (b) (A/B) starts from the school earlier than (B/A) (c) (A/B)... View Article