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प्रश्न
Express 81 as the sum of first nine consecutive odd numbers.
उत्तर
The first nine consecutive odd numbers are 1, 3, 5, 7, 9, 11, 13, 15 and 17.
We have: 81
As, 81 is a perfect square.
So, 81 = (9)2
= 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17
= Sum of first nine consecutive odd numbers.
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संबंधित प्रश्न
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