Question

Find the smallest perfect square divisible by 5,7 and 10

Answer 1

Answer:

answer is -4900

Step-by-step explanation:

first take lcm of 5,7,10 =70 =2×5×7

the perfect square =2×2×5×5×7×7 =

4900.

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Answer 2

Answer: 4900

Step-by-step explanation:

To find : The smallest perfect square divisible by 3,4,5,6 ?

Solution :

First we take LCM of 5,7 and 10

5 | 5   7   10

  | 1    7   2

LCM (5,7,10) = 1,2,5,7

In LCM, 1,2,5 and 7 are not in pairs so we should multiple it by (1 ×2×5×7) .

I.E. (1 ×2×5×7) ×(1 ×2×5×7)  = 70 × 70 = 4900

The Required perfect square is  4900

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