TCS Company Numerical Ability Probability

.A pair of 8 slided dice has sides numbered 1 to 8.Each side has same probability or chance of landing face up.The probability that the product of 2 numbers on the sides that land face up exceeds 36 is
a)11/64 b)5/32 c)3/16 d)1/4

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TCS Other Question

100 students appeared for two different examinations 60 passed the first,50 the second and 30 both the examinations.Find the probability that a student selected at random failed in both the examination
a)5/6 b)1/5 c)1/7 d)5/7
A man sold 12 candies in $10 had loss of b% then again sold 12 candies at $12 had profit of b% find the value of b.