The square root of the sum of digits in the square of 121 is _____???
Options ---
1. 4
2. 3
3. 6
4. 9
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The square root of the sum of digits in the square of 121 is _____???
Options ---
1. 4
2. 3
3. 6
4. 9
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Answer 1.)4
Square of 121= 14641
Sum of digits of 121²= 1+4+6+4+1=16
Then,
(Square root)√ 16 = 4
So the answer is 4
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