Answer :
AN = (1/2^N-1) A1 { in general AN= (r^N-1) A1
A5 = (1/2^4) 40 = 40/16 = 0.5
So the answer to your question is 0.5
A5 = (1/2^4) 40 = 40/16 = 0.5
So the answer to your question is 0.5