How would the number 231 be expressed as a binary number?How would the number 231 be expressed as a binary number?

A. 11011011
B. 11110011
C. 11100111
D. 11111001
E. 11010011


Answer: C
Explanation
Decimal number 231 equates to 11100111 in binary (128+64+32+0+0+4+2+1)
Incorrect Answers:
A: Binary 11011011 equates to 219 (128+64+0+16+8+0+2+1)
B: Binary 11110011 equates to 243 (128+64+32+16+0+0+2+1)
D: Binary 11101011 equates to 249 (128+64+32+16+8+0+0+1)
E: Binary 11010011 equates to 211 (128+64+0+16+0+0+2+1)