Advertisements
Advertisements
प्रश्न
Without adding, find the sum:
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23
Advertisements
उत्तर
We know that the sum of first n odd natural numbers is n2.
Here, we have to find the sum of the first twelve odd natural numbers.
= 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23
= (12)2
= 144
The first 5 are odd natural numbers.
संबंधित प्रश्न
The squares of which of the following would be odd numbers?
- 431
- 2826
- 7779
- 82004
Using the given pattern, find the missing numbers.
12 + 22 + 22 = 32
22 + 32 + 62 = 72
32 + 42 + 122 = 132
42 + 52 + _ 2 = 212
52 + _ 2 + 302 = 312
62 + 72 + _ 2 = __2
|
To find pattern:
|
Express 49 as the sum of 7 odd numbers.
How many numbers lie between squares of the given numbers?
25 and 26
Is 24 a square number?
Fill in the blank box.
1, 3, 6, _______, 15, _______, 28
The sum of first six odd natural numbers is ______.
The sum of first n odd natural numbers is n2.
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.
