Express 4b15 in binary form

100101100010101

Explanation:

Assuming 4b15 is hexadecimal, you can easily convert it to binary by using this lookup table (you will be extra geek if you memorize it):

0=0000

1=0001

2=0010

3=0011

4=0100

5=0101

6=0110

7=0111

8=1000

9=1001

a=1010

b=1011

c=1100

d=1101

e=1110

f=1111