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[单选题]
549是甲、乙、丙、丁4个数的和。如果甲数加上2,乙数减少2,丙数乘以2,丁数除以2以后,则4个数相等。求4个数各是多少?()
A.120,124,61,244
B.121,125,60,243
C.120,123,60,246
D.122,124,60,243
查看答案
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A.120,124,61,244
B.121,125,60,243
C.120,123,60,246
D.122,124,60,243
A.30
B.45
C.52
D 63
A.30 B. 45 C. 52 D. 63
A. 30
B. 45
C. 52
D. 63