Question

V3
.
Q.3 .......... term of the geometric progression
1,2,4,8 .... is 2048.
a) 10th
b) 11th
c) 12th
d) 13th
Section-B-Q.4 to 5 -
2 mark
Solve the following
1.4 Check whether the following pair of angles
not 8600 5800​

Answer 1

Answer:

12th term is 2048

Step-by-step explanation:

a = 1,

r = ar/a = 2/1 = 2

$a {r}^{n - 1} = 2048 \\ 1 \times {2}^{n - 1} = {2}^{11} \\ {2}^{n - 1} = {2}^{11} \\ base \: are \: same \: power \: to \: be \: equated \\ therefore \\ n - 1 = 11 \\ n = 11 + 1 \\ n = 12$