Correct option is C
Given:
Find the sum 1 + 2 + 3 + .......+ 50
Formula Used:
Sum of first (n) natural numbers =
Solution:
1 + 2 + 3 + .......+ 50
here, n = 50
Sum =
= 25 × 51 = 1275
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1 + 2 + 3 +………+ 50 equals
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Find the sum of all three-digit numbers divisible by 9 .
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