MBA Exam

A sum amounts to three times it initial amount in three years, at a certain rate of interest, compounded annually. If in nine years, the amount becomes K times the initial amount, then K isP.S: I am sitter, solve me

1) 26
2) 27
3) 9
4) 81

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MBA Other Question

Karan's salary before he got an increement was 30% of the total income of the family.if his increement is 1/6th of his salary,then what per. of his family's total income is his salary?pl.provide sol.

Ten books are arranged in a row on a book shelf .A student has to select three out of these ten books in such a way that no two books selected by him must have been lying adjacently .In how many ways can he make the selection??share ur approach??

1) 56
2) 64
3) 72
4) none of these