Question

How to find 25th term of ap -5,-5/2,0,5/2

Answer 1

Answer:

here, a=-5 , d=-5/2--5=2.5

25th term = a25=a+24d

                 =-5+24*2.5

                 =-5+60

                 =55

answer is 55.

Step-by-step explanation:

Answer 2

a=-5, d=5/2
$a25 = a + 24d \\ = - 5 + 24 \times 5 \div 2 \\ = - 5 + 60 \\ = 55$