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Chapter 6 Number Play - Part 6

What is 1 + 2 + 3 + ... + 10?

Type: MCQ • Marks: 1
What is 1 + 2 + 3 + ... + 10?
Options
A. 50
B. 45
C. 60
D. 55
Explanation
Sum = n(n+1)/2 = 10 * 11 / 2 = 55.
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Class 7th Ganita Prakash 1

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