Computer Science for IGCSE & O level - Data Representation (Section 12 - No. 4) | ExamPlay

Computer Science for IGCSE & O level - Data Representation (Section 12 - No. 4)

What is the decimal equivalent of the binary number 10101?

21

22

16

17

Giải thích

10101 in binary is (1*16) + (0*8) + (1*4) + (0*2) + (1*1) = 16 + 4 + 1 = 21.

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