MBA Exam

X and Y are natural numbers. X is odd and less than 100. Find the number of solutions of (1/x)=(1/18)-(3/y)plz give the approach

1) 4
2) 3
3) 2
4) 1
5) 5

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MBA Other Question

There are 3 urns A, B and C, A contains 4 red balls and 3 black balls. Urn B contains 5 red balls and 4 black balls. Urn C contains 4 red balls and 4 black balls. One ball is drawn from each of these urns. What is the probability that the 3 balls drawn consist of 2 red balls and a black ball ? a) 17/42 b) 25/42 c) 19/42 d) 23/42

1) a
2) b
3) c
4) d
two concentric circles C1 and C2 have radii (4-pi)/(4+pi) and 1what is max no. of circles that can be drawn in the space b/w these circles such that each of the circles is tangent to C1 and C2??

1) 2
2) 3
3) 4
4) 5