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Decimal 10 in binary is:

A1010
B1001
C1010 (1×8 + 0×4 + 1×2 + 0×1 = 10)
D1100
Answer & Solution
Correct answer: C. 1010 (1×8 + 0×4 + 1×2 + 0×1 = 10)
Repeated division by 2: 10/2 = 5 r 0; 5/2 = 2 r 1; 2/2 = 1 r 0; 1/2 = 0 r 1. Read remainders bottom-up: 1010. Verify: 1×8 + 0×4 + 1×2 + 0×1 = 10.
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