the sum of the first 'n'terms of A.P is
write hence find its 16th terms
Answers
Answered by
0
it's first term is 3×1^2+5×1=8=a(say)
a+a+d=3×2^2+5×2=22
2a+d=22
2×8+d=22
d=22-16=6
16th term is a + 15 d=16+15×6=16+90=106ans
a+a+d=3×2^2+5×2=22
2a+d=22
2×8+d=22
d=22-16=6
16th term is a + 15 d=16+15×6=16+90=106ans
Similar questions