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