Question

Shyam's rich uncle gave him Rs 100 on his first birthday. On each birthday after that he doubled his previous gift. By the day after Shyam's eighth birthday, what was the total amount that his uncle had given him?

• A. Rs 25,500
• B. Rs 25,400
• C. Rs 25,450
• D. Rs 25,600

Answer 1

The Correct Option is A

Amount given on first birthday = Rs 100
On 2nd birthday = Rs 200 
On 3rd birthday = Rs 400 
On 4th birthday = Rs 800 
On 5th birthday = Rs 1600 
On 6th birthday = Rs 3200 
On 7th birthday = Rs 6400 
On 8th birthday = Rs 12800 
So, total amount = Rs 25,500
The correct option is (A)