CAT Quantitative Ability Questions | CAT Permutation, Combination and Probability questions

CAT/2001

Question . 43

Ashish is given Rs. 158 in one rupee denominations. He has been asked to allocate them into a number of bags such that anyamount required between Re. 1 and Rs. 158 can be given by handing out a certain number of bags without opening them. Whatis the minimum number of bags required?

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Explanatory Answer

Method of solving this CAT Quantitative Ability Question from Permutation, Combination and Probability question

(d) Minimum number of bags we have to allocate them insuch a way that we get all the numbersi.e., 1 + 2 + 4 + 8 + 16 + 32 + 64 + 128

Hence, minimum no. of bags required is 8; havingnumber of coins 20, 21, 22,....,27