1.

What is the unit digit of the sum of first 7 even natural numbers.1. 72. 83. 64. 4

Answer» Correct Answer - Option 3 : 6

Given:

First 7 even natural numbers.

Formula used:

Sum of first 'n' even natural numbers = n (n + 1)

Calculations:

Sum of first 'n' even natural numbers = n (n + 1)

⇒ 7 (7 + 1)

⇒ 56

⇒ Unit digit = 6

∴ The unit digit of the sum of first 7 even natural numbers is 6



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