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Quantitative Aptitude
No. System
Find the sum of the first 10 natural numbers.

Question

Find the sum of the first 10 natural

numbers.

A 55 Correct Answer Incorrect Answer

B 50 Correct Answer Incorrect Answer

C 60 Correct Answer Incorrect Answer

D 45 Correct Answer Incorrect Answer

Solution

Sum of first 'n' natural numbers = n(n + 1) ÷ 2
Required sum = 10 × (10 + 1) ÷ 2 = 10 × 11 ÷ 2 = 55

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