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  • Question
  • Which one of the following can't be the square of natural number?


  • Options
  • A. 32761
  • B. 81225
  • C. 42437
  • D. 20164
  • E. None of these

  • Correct Answer
  • 42437 

    Explanation
    The square of a natural number never ends in 7.

    ∴42437 is not the square of a natural number.


  • Numbers problems


    Search Results


    • 1. The difference between the place value and the face value of 6 in the numeral 856973 is

    • Options
    • A. 973
    • B. 6973
    • C. 5994
    • D. None of these
    • Discuss
    • 2. The smallest 3 digit prime number is:

    • Options
    • A. 101
    • B. 103
    • C. 109
    • D. 113
    • Discuss
    • 3. If the number 653 xy is divisible by 90, then (x + y) =?

    • Options
    • A. 2
    • B. 3
    • C. 4
    • D. 6
    • Discuss
    • 4. The difference between the place values of two sevens in the numeral 69758472 is

    • Options
    • A. 0
    • B. 6993
    • C. 699930
    • D. None of these
    • Discuss
    • 5. The sum of first 45 natural numbers is:

    • Options
    • A. 1035
    • B. 1280
    • C. 2070
    • D. 2140
    • Discuss
    • 6. What is the unit digit in the product (365 x 659 x 771)?

    • Options
    • A. 1
    • B. 2
    • C. 4
    • D. 6
    • Discuss
    • 7. How many 3 digit numbers are divisible by 6 in all?

    • Options
    • A. 149
    • B. 150
    • C. 151
    • D. 166
    • Discuss
    • 8. The smallest 6 digit number exactly divisible by 111 is:

    • Options
    • A. 111111
    • B. 110011
    • C. 100011
    • D. 110101
    • E. None of these
    • Discuss
    • 9. The largest 4 digit number exactly divisible by 88 is:

    • Options
    • A. 9944
    • B. 9768
    • C. 9988
    • D. 8888
    • E. None of these
    • Discuss
    • 10. Which one of the following is a prime number?

    • Options
    • A. 161
    • B. 221
    • C. 373
    • D. 437
    • E. None of these
    • Discuss


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