Find least square sum exactly divisible by 12,15,18,20
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Find the least square number which is exactly divisible by 8,12,15 and 20
Answer:-
First,find the hcf of 12,15,18 and 20
18=2 * 3*3
12=2*2*3=2²×3
15=3*5
20=2*2*5=2²×5
a number which is divisible by each of them should contain
2³x3x5
If it is a perfect square number,it should have even powers.
So,
2⁴×3²×5²=16×9×25
=3600
So,the answer is 3600
Answer:-
First,find the hcf of 12,15,18 and 20
18=2 * 3*3
12=2*2*3=2²×3
15=3*5
20=2*2*5=2²×5
a number which is divisible by each of them should contain
2³x3x5
If it is a perfect square number,it should have even powers.
So,
2⁴×3²×5²=16×9×25
=3600
So,the answer is 3600
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