Square of an odd numbers is :
Odd number
Even number
Prime number
None of these
Write unit digit of the square of 21287?
6
7
8
9
Which of the following number cannot be a perfect square by look at the unit of the number?
2025
2058
1296
62500
Using prime factorization method √1296 = ?
162
16
18
36
Which of the given number is a perfect square ?
100
50
60
The sum of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 without actual calculation is :
121
144
150
If side of a square is of length ' x ' then area of square =
x
x2
2x
x3
What will be the unit digit of the square of the number 127936
By the method of repeated subtraction √49
14
5
(32)2 = ?
1204
1024
10204
64
