Computer Science

Convert the following hexadecimal numbers to decimal:

(a) E9

(b) 7CA3

Number System

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Answer

(a) E9

Hexadecimal
Number
PowerValueResult
916019x1=9
E (14)1611614x16=224

Equivalent decimal number = 9 + 224 = 233

Therefore, (E9)16 = (233)10

(b) 7CA3

Hexadecimal
Number
PowerValueResult
3 (11)16013x1=3
A (10)1611610x16=160
C (12)16225612x256=3072
716340967x4096=28672

Equivalent decimal number = 3 + 160 + 3072 + 28672 = 31907

Therefore, (7CA3)16 = (31907)10

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