Question

Find the smallest square number which is exactly divisible by 8,15 and 20​

Answer 1

Answer:

2|8,15,20

2|4,15,10

2|2,15,5

3|1,15,5

5|1,5,5

|1,1,1

LCM=2×2×2×3×5=120

120=2×2×2×3×5 [make 2-2 pairs]

Required number=120×2×3×5=3600.