Question

The second term of a gp is 24 and the fifth term is 81. the series is

Answer 1

$a \: is \: first \: term \\ r \: is \: common \: ratio \\ ar = 24 \\ ar {}^{4 } = 81 \\ r {}^{3} = 81 \div 24 = 27 \div 8 \\ r = 3 \div 2 \\ a =( \ 24 \times 2) \div 3 = 16 \\ series \: is \: 16 \: \: 24 \: \: 36 \: \: ......$