The decimal number 23 can be expressed into binary as ______?
- 11001
- 10111
- 11010
- None of these
Explanation
To convert 23 to binary:
23 = 16 + 4 + 2 + 1 = 2^4 + 2^2 + 2^1 + 2^0
= 10111 (binary)
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