MCQ

If it is possible to make only one such number with the first, the fourth and the sixth digits of the number 531697, which is the perfect square of a two-digit even number, which of the following will be the second digit of the two-digit even number. If no such number can be made, give'@' as the answer and if more than one such numbers can be made, give '©' as the answer.

#### Options

4

2

©

@

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#### Solution

**4Explanation:**5 3 1 6 9 7

I I I

5 6 7

Perfect square = 576, Square root = `sqrt576` = 24

Hence, second digit = 4

Concept: Ranking (Entrance Exam)

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