Math

Question 1

Binary

Answer 1

….2^4 2^3 2^2 2^1 2^0

So 4 in binary is 100
So 13 in binary is 1101

Question 2

Logarithms

Answer 2

log2(8)=3 is the same as 2^3=8

log3(81)=4 is the same as 3^4=81

log5(25)=2 is the same as 5^2=25