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Evaluate 2022three1122three

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Evaluate 2022three1122three

A.

21120

B.

21121

C.

21112

D.

21011

Correct answer is A

2022threewhen converted to base ten =(2023)22023=2×32+0×31+2×30=18+0+2=20ten;(2023)2=(20)2ten=4001122threewhen converted to base ten =(1123)21123=1×32+1×31+2×30=9+3+2=14ten(1123)2=(14)2ten=196tenEvaluate400196=204
Reconvert to base three
3204369R0322R237R122R10R2=211203