26 + 25 + 24 + 23 + 20 = 64 + 32 + 16 + 8 + 1 = 121
Math
1001 in binary is equal to 9 in decimal.
When you write the decimal number '7' in Base-2 (binary), you write '0111'.
Binary numbers should start with a 1, so 0101100100 should be 101100100, which equals 356
11111100 = 252
8
1001 in binary is equal to 9 in decimal.
Converted from binary to decimal, 100000 is equal to 32.
In binary form it is 1010001.
The binary number 10101 represents 21.
The binary number 1000011 is equal to the decimal number 67. See the related link, 'Binary Numbers' below this answer.
The first number (01001101) is equal to the decimal number 77. The second number (00100010) is equal to the decimal number 34. If you add the two together in decimal, you get 111. Expressed as a binary number, 111 is equal to 01101111.
13
11
11111 = 31
1024 = 10000000000
When you write the decimal number '7' in Base-2 (binary), you write '0111'.
The binary number 11100010 converts to 226 in Decimal and E2 in hex.