Math, asked by samita1, 1 year ago

Find the sum of 25th term of AP in which nth term is given by (7-3n).

Answers

Answered by AbhishekSahu999
4
Tn =7-3n
T1=7-3=4
T25=7-75=-68

Sum =25/2 (4+(-68))
25/2×-64
25×(-32)
=-800

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