Question

The 13 term of an AP in two times ita 10 term and the third term is 6 more than two
Inth term Hind the sum of first three terms of the All
OR​

Answer 1

Answer:

Please write question properly!! i can't understand it..."than two

Inth term Hind" ....what's this???

a₁₃=2×a₁₀

a₃=6+a₂

a+2d=a+d+6

=>d=6

a+12d=2a+18d

or a+6d=0

a+(6)6=0

=>a=–36

so, S₃=n/2(2a+(n-1)d

=3/2(2(–36)+(2)(6)

=3/2(–72+12)

=3/2(–60)

=3×–30

S₃= –90

Answer 2

Answer:

refer to the attachment

hope this may help u✌✌