Multiple choice

How many 8-digit numbers are there in binary system ( i.e.base 2)?

  1. 16

  2. 32

  3. 64

  4. 128

  5. 256
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In binary system only 0 and 1 are to be used and since 0 can not be used to fill the first place, so the number of 8 digit numbers in binary system are 1 X 2 X 2 X 2 X 2 X 2 X 2 X 2 = 128.

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