Question

Find the 55th term of the arithmetic sequence 11, 21, 31, ...11,21,31,

Answer 1

Answer:

551

Step-by-step explanation:

Here, a=11 , d=21-11=10.

tn=a+(n-1)d...formula

t55=11+(55-1)×10

=11+540

=551.

55th term of a given A.P. is 551.