Question

In an A.P S7=5 and S5=7 then S12=

Answer 1

0

As s5 = 7 and s7 = 5 means its decreasing and there is a difference of 2 b/w 2 terms means its decreasing by 1 every term

So, s7 = 5

s8 = 4

s9 = 3

s10 = 2

s11 = 1

s12 = 0