MBA Exam

Let D be a decimal of the form, D = 0.0a1a2a1a2a1a2.., where digits a1 & a2 lie between 0 and 9. Then which of the following numbers necessarily produces an integer, when multiplied by D?

1) 18
2) 108
3) 1980
4) 208

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MBA Other Question

The cubic polynomial x3 + bx2 + cx + d cannot be expressed in the form (x + m) (x2 + nx + o) where a, b, c, m, n, o are all integers if and only if

1) d and b is even, c is odd
2) (bd + cd) is odd
3) d is even, b and c are odd
4) none of these
Ajayâ€™s overall average
speed is 450/11 kmph. His speed over stretch X was 5/12th of his average speed over the stretches Y and
Z together. Find his speed over stretch X (in kmph)