1.

Find no. of natural numbers which equal to the sum of squares of their digits​

Answer»

Answer:

The family of natural numbers includes all the counting numbers, starting from 1 till infinity. If n consecutive natural numbers are 1, 2, 3, 4, …, n, then the sum of squared ‘n’ consecutive natural numbers is REPRESENTED by 12 + 22 + 32 + … + n2.

In short, it is denoted by the notation Σn2. The formula for the ADDITION of squares of natural numbers is GIVEN below:

Σn2 = [n(n+1)(2n+1)]/6

Step-by-step explanation:

The family of natural numbers includes all the counting numbers, starting from 1 till infinity. If n consecutive natural numbers are 1, 2, 3, 4, …, n, then the sum of squared ‘n’ consecutive natural numbers is represented by 12 + 22 + 32 + … + n2.

In short, it is denoted by the notation Σn2. The formula for the addition of squares of natural numbers is given below:

Σn2 = [n(n+1)(2n+1)]/6

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