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प्रश्न
Without adding find the sum:
1 + 3 + 5 + 7 + 9
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उत्तर
We know that the sum of first n odd natural numbers is n2.
Here, we have to find the sum of the first five odd natural numbers.
Therefore, 1 + 3 + 5 + 7 + 9 = (5)2 = 25
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संबंधित प्रश्न
The squares of which of the following would be odd numbers?
- 431
- 2826
- 7779
- 82004
Without adding, find the sum:
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19
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25 and 26
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64 is the square number of __________
A number multiplied by _________ is called square of that number
1, 3, 6, _______, 15, _______, 28
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Express 81 as the sum of first nine consecutive odd numbers.
The perimeters of two squares are 40 and 96 metres respectively. Find the perimeter of another square equal in area to the sum of the first two squares.
