Question

which term of the ap 100,95,90... will be equal to 10​

Answer 1

Step-by-step explanation:

here,

a=100

d=a2-a1=95-100= (-5)

an= 10

we know,

an=a+(n-1)d

10=100+(n-1)(-5)

10-100=(n-1)(-5)

-90=(n-1)(-5)

-90 = n-1

-5

n-1=18

n=18+1

n=19