A) 768
B) 1536
C) 3072
D) 30
Correct Answer: B
Solution :
\[~3,3\times {{2}^{1}},3\times {{2}^{2}},3\times {{2}^{3}},.\text{ }.\text{ }.\text{ }.\] On 10th day, his earning will be \[3\times {{2}^{9}}=3\times 512=\text{ }1536\]
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