Computer Science for IGCSE & O level - Data Representation (Section 3 - No. 1) | ExamPlay

Computer Science for IGCSE & O level - Data Representation (Section 3 - No. 1)

What is the decimal value of the binary number 10101?

19

20

21

22

Giải thích

10101 = (1*16) + (0*8) + (1*4) + (0*2) + (1*1) = 21

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