CAT Quantitative Ability Questions | CAT Number System questions

CAT/2000

Question . 128

N = 1421 × 1423 × 1425 what is the remainder when N is divided by 12?

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Explanatory Answer

Method of solving this CAT Quantitative Ability Question from Number System question

(c) N = 1421 × 1423 × 1425, when these numbers are divided by 12 we have remainders as 5, 7, 9.

The product of remainders when divided by 12 gives 3 as its remainder. Thus when N divided by 12 remainder is 3