Numerical Ability - Simplification & Approximation
Find the sum of the first 5 even numbers.
Find the sum of the first 5 even numbers.
easy Q12 of 15
Step-by-Step Solution
Step 1: Recall the formula
Sum of first n even numbers = n(n+1).Step 2: Compute for n = 5
5 × 6 = 30.Final Answer:
30 → Option A.Quick Check:
2 + 4 + 6 + 8 + 10 = 30 ✅
Quick Trick: Sum of n even numbers = n(n+1).
Common Mistakes:
- Using formula for odd numbers instead of even.
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