Question

Que 6 In an AP a=5,d=3and n=13,
find sum of 13 terms./ha SUD​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Sn=n/2(2a +(n-1)d)

=13/2(2(5)+(13-1)3)

=13/2(10+36)

=13/2(46)

=13(23)=299