if it is possible to form a number with the second the fifth and the e | Examsbook

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Q: If it is possible to form a number with the second, the fifth and the eighth digits of the number 31549786, which is the perfect square of a two - digit even number, which of the following will be the second digit of that even number ?

1
1
2
4
3
6
4
None of these

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Answer : 2. "4"
Explanation :
Answer: B) 4 Explanation: The 2nd, 5th and 8th digits of the number 31549786 are 1, 9 and 6 respectively. The perfect square of a two - digit even number, formed using the digits 1, 9 and 6 is 196. And, 14 x 14 = 196 So, the required even number is 14. Clearly, its second digit is 4. Hence, the answer is (b).

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