What is 101 in decimal?

101 in binary equals 5 in decimal.

Step-by-step working

Bit	Position	2ⁿ	Contribution
1	2	4	4
0	1	2	0
1	0	1	1
Total			101₂ = 4 + 1 = 5

Each bit of 101 is multiplied by 2 raised to its position (counted from 0 at the right) and the results are added.

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