Asked by jesse
hi please help me. to find the sum of all multiples of 5 between 1 and 50. please thank you.
Answers
Answered by
oobleck
how many multiples are there? 10
So, since the first and last terms are 5 and 50,
S10 = 10/2 (5+50) = 275
So, since the first and last terms are 5 and 50,
S10 = 10/2 (5+50) = 275
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