Question

the 19th term from end of the series 2+6+10+......+86 is ?

plz give answer with method

Answer 1

Answer:

14

Step-by-step explanation:

First term(a)=2

Common difference (d)= 6-2=4

a+(n-1)d = 86

2+(n-1)4 = 86

4n-4=86-2

4n = 84+4

4n = 88

n=88/4 = 22

22nd term is 86

19th term from the end if the series be the 4th term

=>> a+(4-1)d

=>> 2+3(4)

=>> 2+12

=>> 14

Hope it will help you...

Answer 2

Answer:

the answer is 14 but I can't explain the process. now