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3. Squares and Square Roots
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Q8 of 119 Page 58

If n is odd, then (1+3 +5 + 7 + ... to n terms) is equal to:

We know that,

Sum of n numbers =


=


=


=


= n2


Hence,


Option (C) is the correct option.

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6

Which of the following cannot be the unit digit of a perfect square number?

7

The square of a proper fraction is:

9

Which of the following is a Pythagorean triplet?

10

What least number must be subtracted from 176 to make it a perfect square?

Questions · 119
3. Squares and Square Roots
1 2 3 4 5 6 1 2 3 4 5 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 5 6 7 8 9 10 11 12 13
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