Question

Meera asked for 10 gold coins in the first month, doubling the amount every month. What is Meera's salary in the \( 12^{th} \) month?

Options

• \( 10240 \)

• \( 1200 \)

• \( 5120 \)

• \( 20480 \)

Answer 1

Each term of Meera's salary is double the preceding term: \( \frac{t_{2}}{t_{1}} = \frac{20}{10} = 2 \). Continuing this doubling, \( t_{11} = 10240 \) and \( t_{12} = 10240 \times 2 = 20480 \).