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11.8 115-12-11-00 -11110 = 1011222222
again, 0.8 × 2 = 1.60
0.6 × 2 = 1.20
0.2 × 2 = 0.40
0.4 × 2 = 0.80
0.8 × 2 = 1.60
(0.8)10=1100110011.....
∴ (11.8)10 = (1011.1100110011........)2
2nd part (10111.011)2
= (1 × 24)+(0× 23) + (1 × 22) + (1 × 21) + (1 × 20) + (0 × 2-1) + (1 × 2-2) + (1 × 2-3)
= 16 +0 + 4 + 2 + 1 + 0 +14 + 18 = 23+ 38 = 23.375