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If it is possible to make only one such number with the first, the forth 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 number can be made, give '©' as the answer
1) 4
2) 2
3) 6
4) @
5) ©

A

4

B

2

C

6

D

`@`

Text Solution

Verified by Experts

The correct Answer is:
A

Perfect square `=576`
Square root `=sqrt(576)=24`
Hence ,second digit =4
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