MBA Exam

There are 7 pairs of black shoes and 5 pairs of white shoes. They are all put into a box and shoes are drawn one at a time.What is the minimum number of shoes required to be drawn out to get at least one pair of correct shoes (either white or black) ?

1) 12
2) 7
3) 13
4) 18

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MBA Other Question

If the equation (x2 - 2ax -4(a2 + 1))(x2 - 4x -2a(a2 + 1)) = 0 has exactly 3 different roots, then how many values can "a" take?

1) 4
2) 3
3) 2
4) 1
Two persons R and S decided to meet at a place 36km from both. S, who is given a start of 2hrs, reached the destination 12 min earlier to R. If R travels with speed 18kmph greater than S, find the speed of R.

1) 25
2) 24
3) 30
4) 16