CAT Quantitative Ability Questions | CAT Number System questions
CAT/1999
Question . 136
A, B, C are three distinct digits. AB is a two digit number and CCB is a three digit number such that (AB)² = CCB where CCB > 320. What is the possible value of the digit B?
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Explanatory Answer
Method of solving this CAT Quantitative Ability Question from Number System question
(a) (AB)² = CCB. The only number satisfying the given condition 21² = 441. So, B = 1.