Question

in an ap is the first term is 13 and 16 term is 73 then find its 31st term​

Answer 1

Answer:

Step-by-step explanation:

a is given as 13.

16th term is 73. so a + (n-1)d=73.

n is given 16. so 13 + 15*d=73.

15*d = 60. hence d = 4.

now we have to find value of 31st term.

a +(n-1)d. we substitute values of a, n and d

we get 13 +120= 143.

Answer = 143.