What is the sum of the sequence: 10, 20, 30, 40, ........1000?
- 60000
- 50000
- 50500
- None of these
Explanation
Numbers in the sequence (n): 1000 ÷ 10 = 100 terms.
Sum Formula: Sum = n/2 × First Term + Last Term
Calculation:
Sum = 100/2 × (10 + 1000)
Sum = 50 × 1010
Sum = 50500
Last verified on 23-02-2026
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