Question

For the AP : 1/4, −1/4, −3/4, 5/4 ........, write the first term a and the common difference d. And find the 7th term

Answer 1

a=1/4
d=-1/4-1/4
=-1/2
A7=a+6d
=1/4+6(-1/2)
=1/4-3
=1-12/4
=-11/4