Quick Answer: What Is The Sum Of First 28 Odd Natural Numbers?

What is the sum of odd numbers from 1 to 100?

So we can do the following: Sum of odd consecutive integers from 1 to 100 = (Sum of all consecutive integers from 1 to 100) – (Sum of even consecutive integers from 1 to 100).

Sum of odds = (100 x 101/2) – [2 x (50 x 51/2)] = 5050 – 2550 = 2500..

What is the sum of odd natural numbers?

An efficient solution is to use direct formula. To find the sum of first n odd numbers we can apply odd number theorem, it states that the sum of first n odd numbers is equal to the square of n. if we apply odd number theorem: sum of first 10 odd numbers = n * n = 10 * 10 = 100.

What is the sum of first 7 odd natural numbers?

Answer. sum of odd natural numbers – 1+3+5+7+9+11+13 gives you 49 .

What is the sum of all the odd natural numbers from 1 to 29?

The number series 1, 3, 5, 7, 9, . . . . , 57. Therefore, 841 is the sum of first 29 odd numbers.

What is the sum of first 20 odd natural numbers?

Answer: The sum of the first 20 odd natural numbers is 400. are known as counting numbers.

What is the sum of first 25 odd natural numbers?

The number series 1, 3, 5, 7, 9, . . . . , 49. Therefore, 625 is the sum of first 25 odd numbers.

What is the sum of first 25 even numbers?

The number series 2, 4, 6, 8, 10, 12, . . . . , 50. Therefore, 650 is the sum of first 25 even numbers.

What is the sum of first 20 even numbers?

The number series 2, 4, 6, 8, 10, 12, . . . . , 40. Therefore, 420 is the sum of first 20 even numbers.

What is the sum of first 50 odd numbers?

The number series 1, 3, 5, 7, 9, . . . . , 99. Therefore, 2500 is the sum of first 50 odd numbers.