Question

What is the value of the four term in a geometric sequence for which a1=10 and r=0.5

Answer 1

Since it is Geometric, first term = 10, common multiplying ratio = 0.5

a₁ = 10

a₂ = 10*0.5 = 5

a₃ = 5*0.5 = 2.5

a₄ = 2.5*0.5 = 1.25

The value of the fourth term = 1.25