Maria found 1 penny on Mon under her pillow, 2 on Tuesday and 4 on Wed. On Thurs, Fri, Sat and Sun she found double the amount she found under the pillow she found the day before.
how much money does Maria have on Sunday?
2 answers
1 + 2 + 4 + 8 + 16 + 32 + 64 = ?
127