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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
  • Show Answer
  • Workspace

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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