Question

If the third and the ninth terms of an AP are 4 and -8 respectively, which term of this AP is zero?

Answer 1

Answer:

1st term

Step-by-step explanation:

third term menas a+2d=4 ... equation 1st

a+8d=-8...... equation 2nd

subtracting 2nd form 1

6d =-12

d=-2

now putting d in equation 1

a+2(-2) =4

a-4=4

a=0

and we can see that 1st term is 0