Multiple choice

42 in binary is...?

  1. 100110

  2. 101010

  3. 110011

  4. 100011
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The decimal number 42 can be broken down into powers of two: 32 + 8 + 2. Placing a 1 in the 32s, 8s, and 2s columns, and a 0 in the 16s, 4s, and 1s columns, gives the binary representation 101010.

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