520 = 26 * 20 = 2 * 13 * 22 * 5 = 23 * 13 * 5
Required smallest number = 2 * 13 * 5 = 130
130 is the smallest number which should be multiplied with 520 to make it a perfect squar
Find the smallest number which should be multiplied with 520 to make it a perfect square.
Options:
A: 30
B: 120
C: 55
D: 35
E: None of these