MBA Exam

Let f(n) denote the square of the sum of the digits of n. Let f ^2(n) denote f(f(n)), f ^3(n) denote f(f(f(n))) and so on. Then f 1998(11) = ??

1) 49
2) 256
3) 169
4) 16

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MBA Other Question

Two solution of acid in water, whose percentage concentrations are in the ratio 5:6, are mixed in the ratio of 5:6 by volume, what is the maximum possible concentration of the mixture (approx)?Please explain the process

1) 91.33%
2) 83.33%
3) 85.71%
4) 92.42%
Find the reminder when 75!*130! is divided by 211