Menu
Home / Logical Reasoning / Number,Ranking&Time Sequence Test :: Discussion

Discussion :: Number,Ranking&Time Sequence Test

  1. If it is possible to make a number which is perfect square of a two-digit odd number with the second, the sixth and ninth digits of the numbers 187642539, which of the following is the digit in the unit's place of that two-digit odd number?
    2. A.
    1
    B.
    7
    C.
    9
    D.
    No such number can be made
    E.
    More than one such number can be made

    View Answer

    Workspace

    View Answer

    Answer : Option B

    Explanation :

    The specified digits are 8, 2 and 9. Now, we know a perfect square number does not have 8 and 2 at unit's place. Therefore we can make only two three-digit numbers from it, i.e. 829 and 289. Among these two numbers, 289 is a perfect square number, i.e. square of 17. Thus, unit's digit is 7 and ten's digit is 1.

Write your comments here:

Be The First To Comment