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If it is possible to form a number which is a perfect square of a two digit odd number using the second, fourth, seventh digits of the number 739142658 using each only once, which of the following is the second digit of that two-digit odd number?
  • a)
    4
  • b)
    7
  • c)
    3
  • d)
    None
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
If it is possible to form a number which is a perfect square of a two ...
Analysis:
Given number: 739142658

Identifying the Digits:
- Second digit: 3
- Fourth digit: 1
- Seventh digit: 6

Forming the Possible Numbers:
To find the square of a two-digit odd number using the given digits:
- The possible odd two-digit numbers can be: 31, 33, 35, 37, 39, 61, 63, 65, 67, or 69.

Checking for Perfect Squares:
- Squaring the possible odd numbers:
- 31^2 = 961
- 33^2 = 1089
- 35^2 = 1225
- 37^2 = 1369
- 39^2 = 1521
- 61^2 = 3721
- 63^2 = 3969
- 65^2 = 4225
- 67^2 = 4489
- 69^2 = 4761

Conclusion:
- None of the possible two-digit odd numbers formed using the second, fourth, and seventh digits of the given number (739142658) result in a perfect square.
- Therefore, the answer is option 'D' (None).
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If it is possible to form a number which is a perfect square of a two digit odd number using the second, fourth, seventh digits of the number 739142658 using each only once, which of the following is the second digit of that two-digit odd number?a)4b)7c)3d)NoneCorrect answer is option 'D'. Can you explain this answer?
Question Description
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