MBA Exam

if ab and cd are two digit number where digits a,b,c and d lies from 0 through 9. also, at one point of time only one digit can be 0 in the number made out of the combination of a and b. if the percentage equivalent of the fraction ab/cd= 2[ab+a.b+0.ab+0.0ab..........]. then what could be the value of cd???

1) 45
2) 90
3) 9
4) 99

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MBA Other Question

using the digits 9,8,7,6,5 exactly once ,two numbers N1 and N2 are formed such that the product is the maximum possible number .find the sum of N1 and N2??Post approach

1) 971
2) 863
3) 962
4) 1052
The LCM of two numbers a and b is p^p q^q r^r, where p, q and r are three distinct prime numbers. The number of possible ordered pairs (a, b) is(Approach Please.. )

1) (p + 1) (q + 1) (r + 1)
2) p^2 q^2 r^2
3) (2p + 1) (2q + 1) (2r + 1)
4) None of these