(Q10).Similarly subtract a fixed number from each and every term of A.P. Write the resulting numbers as a list.

4, 7, 10, 13, 16, ……

Subtracting ‘2’ from the each term of A.P in given series, we get

= 4 – , 7 – , 10- , 13 – , 16 – , ……

= , , , , , ……

In the list obtained the first term

a1 = , a2 = , a3 = , a4 = ,

Also a2 – a1 = – =

a3 – a2 = – =

a4 – a3 = – =

i.e., d = a2 – a1 = a3 – a2 = a4 – a3 =

∴ The resulting list forms an A.P.