Find the least square number which is exactly divisible by 10,12,15 and 18.
999
900
899
987
B. 900
L.C.M. of 10, 12, 15, 18 = 180. Now, 180 = 2 * 2 * 3 * 3 *5 = 22 * 32 * 5.
To make it a perfect square, it must be multiplied by 5.
Required number = (22 * 32 * 52) = 900.
1.2934..
1.2933..
1.3
1
Find the least square number which is exactly divisible by 10,12,15 and 18.
999
900
899
987
160
150
132
100
0.03
.003
3
3.0
3
6
9
2
5
5/4
3/4
2/3
By what least number 4320 be multiplied to obtain a number which is a perfect cube?
32
56
52
50
32
23
15
16
6
3
4
8
170
170/11
123
123/11