Question

If the 10th term of an AP is 47 and its first term is 2 find the first 15 terms.

Answer 1

Answer:

fifteen term is 72

Step-by-step explanation:

tenth term of an ap is 47

A10=47

a+9d=47.....................................(1)

first term is 2

a=2

put the value of a in equation one

a+9d=47

2+9d=47

9d=47-2

d=45/9

d=5

fifteen term =a+14d

A15=2+14(5)

A15=2+70

A15=72