Question

Qual o 8° termo da PG (3,12,48,...)

Answer 1

PG (3, 12, 48...)
a1 = 3
q = a2 ÷ a1 = 12 ÷ 3 = 4

$an = a1 \times q^{n - 1} \\ a8 = 3 \times 4^{8 - 1} \\ a8 = 3 \times 4^7 \\ a8 = 3 \times 16384 \\ a8 = 49152$

Answer 2

3x4=12
12x4=48
48x4=192
192x4=768
768x4=3072
3071x4=12288
12288x4=49152
49152x4=196608