Convert 1111 to base ten

Answer 1

let look at it and figure it out.. 1111 means the following first number on the right is the number of 2^0s which is 1 next number is the number of 2^1 powers or 2's next is the number of 2^2 =4s next is the number of 2^3=8 s So we have 1+2+4+8=15