# Vinsys IT Services Interview Questions

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###### 12 kg of rice costing 30 per kg is mixed with 8 kg of rice costing 40 per kg. The average per kg price of mixed rice is A. 30 B. 32 C. 34 D. 36
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###### The surface area of a sphere is same as the curved surface area of a right circular cylinder whose height and diameter are 12 cm each. The radius of the sphere is: A. 8 cm B. 10 cm C. 6 cm D. 4 cm
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###### The interval in which the Lagrange’s theorem is applicable for the function f(x) = 1/x is A. [-1, 1] B. [2, 3] C. [-2, 2] D. [-3, 3]
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###### A boat takes 38 hours for travelling downstream from point A to point B and coming back to point C midway between A and B. If the velocity of the stream is 4 kmph and the speed of the boat in still wa A. 320 km B. 340 km C. 360 km D. 380 km
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###### In a km race, A beats B by 28 metres or 7 seconds. Find A’s time over the course. A. 5 min 4 sec B. 4 min 5 sec C. 4 min 3 sec D. 3 min 4 sec
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###### If A is a matrix of order m x n and B is a matrix of order n x p then order of AB is A. p x n B. m x p C. p x m D. n x p
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###### Which of the following statements is TRUE? A. For all sets A, B, and C, (A − B) ∩ (C − B) = (A ∩ C) − B. B. For all sets A, B, and C, (A − B) ∩ (C − B) = A − (B ∪ C). C. For all sets A, B, and C, A − (B − C) = (A − B) − C. D. For all sets A, B, and C, if A ∪ C = B ∪ C then A = B.
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