4. Find the smallest possible perfect square
number which is exactly divisible by
following set of numbers.
a) 3, 4, 12 and 15 b) 4, 6, 8 and 12
c) 6, 15, 18 and 20
18
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4. Find the smallest possible perfect square
number which is exactly divisible by
following set of numbers.
a) 3, 4, 12 and 15 b) 4, 6, 8 and 12
c) 6, 15, 18 and 20
18
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LCM of 4,5,6,15,and18
4=2×2
5=5×1
6=2×3
15=3×5
18=2×3×3
So, L.C.M=2
2
×3
2
×5=180
180 when multiplied by 5 becomes a perfect square.
∴ Required number=180×5=900
answer
ok this is your correct answered