Question

a1 + a3 + a5 = -12 , a1 a2 a3 = 8. , find a2 + a4 + a6

Answer 1

take a1 as a-2d,

a2 as a-d ,

a3 as a

a4 as a+d

a5 as a+2d

then solve it u will get the ans of -21