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Arithmetic Aptitude :: Numbers

  1. 476 ** 0 is divisible by both 3 and 11. The non-zero digits in the hundred's and ten's places are respectively:

  2. A.

    7 and 4

    B.

    7 and 5

    C.

    8 and 5

    D.

    None of these

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  3. If the number 97215 * 6 is completely divisible by 11, then the smallest whole number in place of * will be:

  4. A.

    3

    B.

    2

    C.

    1

    D.

    5

    E.

    None of these

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  5. (112 + 122 + 132 + ... + 202) = ?the smallest whole number in place of * will be:

  6. A.

    385

    B.

    2485

    C.

    2870

    D.

    3255

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  7. If the number 5 * 2 is divisible by 6, then * = ?

  8. A.

    2

    B.

    3

    C.

    6

    D.

    7

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  9. Which of the following numbers will completely divide (4915 - 1) ? 

  10. A.

    8

    B.

    14

    C.

    46

    D.

    50

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  11. \(9+{3\over4}+7+{2\over17}-(9+{1\over15})=?\)

  12. A.

    \(7+{719\over1020}\)

    B.

    \(9+{817\over1020}\)

    C.

    \(9+{719\over1020}\)

    D.

    \(7+{817\over1020}\)

    E.

    None of these

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  13.  

    \([1- \frac { 1 } { n }]\)+\([1- \frac {2 } { n}]\)+\([1- \frac { 3 } { n } ] \)+.... up to n terms=?

  14. A.

    \(\frac { 1 } { 2 }n\)

    B.

    \(\frac { 1 } { 2 }(n-1)\)

    C.

    \(\frac { 1 } { 2 }n(n-1)\)

    D.

    None of these

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  15. On dividing 2272 as well as 875 by 3-digit number N, we get the same remainder. The sum of the digits of N is:

  16. A.

    10

    B.

    11

    C.

    12

    D.

    13

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  17. A boy multiplied 987 by a certain number and obtained 559981 as his answer. If in the answer both 9 are wrong and the other digits are correct, then the correct answer would be:

  18. A.

    553681

    B.

    555181

    C.

    555681

    D.

    556581

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  19. How many prime numbers are less than 50 ?

  20. A.

    16

    B.

    15

    C.

    14

    D.

    18

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