Find the smallest square number which is divisible by each of the numbers 4, 9 and 10.

# Find the smallest square number which is divisible by each of the numbers 4, 9 and 10.

1. A
400
2. B
200
3. C
900
4. D
520

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### Solution:

We have to find LCM of 4,9&10.
So,
4=2×2, 9=3×3, 10=5×2
So, LCM= ×5=180
Now, Using LCM we see that is 180 are multiplied by 5 then it will become a perfect square.
required number =180×5=900.

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