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we know that the number that will be perfectly divisible by each one of 4 , 9, and 10 is their LCM.
The LCM of these numbers is:
LCM of 4 , 9 , 10 = 2 × 2 × 3 × 3 × 5 = 180
Here, prime factor 5 does not have its pair
There fore, 180 is not a perfect square.
If we multiply 180 with 5, then the number will be comeape rfect square.
There fore, 180 should be multiplied with 5 to obtain a perfect square.
Hence,
There quireds quare number is 180 × 5 = 900
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