Advertisements
Advertisements
Question
Without adding find the sum:
1 + 3 + 5 + 7 + 9
Advertisements
Solution
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
RELATED QUESTIONS
Observe the following pattern and find the missing digits.
112 = 121
1012 = 10201
10012 = 1002001
1000012 = 1 ______ 2 ______ 1
100000012 = ______
Observe the following pattern and supply the missing number.
112 = 121
1012 = 10201
101012 = 102030201
10101012 = _____
____2 = 10203040504030201.
Without adding, find the sum:
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23
How many numbers lie between squares of the given numbers?
25 and 26
64 is the square number of __________
Is 24 a square number?
A number multiplied by _________ is called square of that number
1, 3, 6, _______, 15, _______, 28
The next two numbers in the number pattern 1, 4, 9, 16, 25 ... are ______.
The sum of first six odd natural numbers is ______.
