Question

Markus receives dollar bills from his grandfather for on week. On the first day he received $1; on the second day he received $2, on third day he received $4, and on the fourth day he received $8. If this continues, how much money will Markus have by the end of the week?

Answer 1

Answer: $127

Explanation:

5th day: 8 * 2 = 16

6th day: 16 * 2 = 32

7th day: 32 * 2 = 64

Then add all the money he got throughout the week,

1 + 2 + 4 + 8 + 16 + 32 + 64

= 127