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Arithmetic Aptitude :: Numbers

  1. Which one of the following is not a prime number?

  2. A.

    31

    B.

    61

    C.
    71
    D.

    91

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  3. (112 x 54) = ?

  4. A.

    67000

    B.
    70000
    C.

    76500

    D.

    77200

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  5. It is being given that (232 + 1) is completely divisible by a whole number. Which of the following numbers is completely divisible by this number?

  6. A.

    (216 + 1)

    B.

    (216 - 1)

    C.

    (7 x 223)

    D.

    (296 + 1)

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  7. What least number must be added to 1056, so that the sum is completely divisible by 23 ?

  8. A.

    2

    B.

    3

    C.

    18

    D.

    21

    E.

    None of these

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  9. 1397 x 1397 = ?

  10. A.

    1951609

    B.

    1981709

    C.

    18362619

    D.

    2031719

    E.

    None of these

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  11. How many of the following numbers are divisible by 132 ?
    264, 396, 462, 792, 968, 2178, 5184, 6336

  12. A.

    4

    B.

    5

    C.

    6

    D.

    7

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  13. (935421 x 625) = ?

  14. A.

    575648125

    B.

    584638125

    C.

    584649125

    D.
    585628125

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  15. The largest 4 digit number exactly divisible by 88 is:

  16. A.

    9944

    B.

    9768

    C.

    9988

    D.

    8888

    E.

    None of these

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  17. Which of the following is a prime number ?

  18. A.

    33

    B.

    81

    C.

    93

    D.
    97

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  19.  

    What is the unit digit in {(6374)1793 x (625)317 x (341491)}?

  20. A.

    B.

    2

    C.

    3

    D.

    5

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