Question

11th term is 5 and 13th term is 79 (Ans:-37) find common difference​

Answer 1

$\bold\red{Answer:}$

Formula used = tn=a+(n-1)d

for 11th term

t11=a+10d

a+10d=5----(1)

t13=a+12d

a+12d=79---(2)

subtract 1 and 2 we get

2d=74

d=74/2

d=37

Answer=37

hope it helps

☆

Answer 2

Answer:

a+10d=11term + a+12d=13term(a+10d=5+a+12d=79)

10d-12d=74

2d=74

d=74/2

d=37