Math, asked by shanmukhashannu, 10 months ago

Find the sums given below:
7+105+14+...+84
this question is from progressions

Answers

Answered by anand2005gmailcom

0

Answer is 45.5

Step-by-step explanation:

Sn=1/2(a1+an)

Sn=1/2(7+84)

Sn=1/2×91

Sn=91/2

Sn=45.5

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