Question

the second term of Ap is 4 and 7 term is 11 . find its 16th term​

Answer 1

Answer:

We can write

a+d=4

and

a+6d=1

By comparison the value we got

d=5

So,

a+d=4

a+5=4

a=(-1)

So by using last term formula

an=a+(n-1)d

n=16

So,

16th term is 54

Answer 2

Answer:

Step-by-step explanation:

t2=a+d=4

t7=a+6d=11

t7-t2=>

5d=7

d=7/5

a+d=4

a=4-7/5

a=23/5

t16=a+15d=23/5+15(7/5)

               =23/5+3*7

               =23/5+21

              =23+105/5

              =128/5  

               =25.6