MBA Exam

A cube is painted with red colour and then cut into 64 small identical cubes. If two cubes are pickedrandomly from the heap of 64 cubes, what is the probability that both of them have exactly two facespainted red?Explain approach.

1) 31/63
2) 23/168
3) 47/84
4) 1/4

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MBA Other Question

What is the probability that the product of two integers chosen at random has the same unit digit asthe two integers?

1) 3/10
2) 1/25
3) 4/15
4) 7/15
202 * 2002 * 20000...2(7 zeros) * 200.........2(15 zeros) * 20000............2(31 zeros)sum of digits in this multiplication would be

1) 119
2) 160
3) 141
4) 144