Advertisements
Advertisements
प्रश्न
Without adding, find the sum:
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23
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.
APPEARS IN
संबंधित प्रश्न
The squares of which of the following would be odd numbers?
- 431
- 2826
- 7779
- 82004
Observe the following pattern and find the missing digits.
112 = 121
1012 = 10201
10012 = 1002001
1000012 = 1 ______ 2 ______ 1
100000012 = ______
Without adding, find the sum:
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19
How many numbers lie between squares of the given numbers?
12 and 13
64 is the square number of __________
Is 24 a square number?
A number multiplied by _________ is called square of that number
Fill in the blank box.
1, 3, 6, _______, 15, _______, 28
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.
