问答题

当m为合数时，令m=24，那么φ(24)等于多少?

A.0
B、7.0
C、8.0
D、10.0

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φ(24)等于哪两个素数欧拉方程的乘积?

A、φ(2)*φ(12)
B、φ(2)*φ(4)
C、φ(4)*φ(6)
D、φ(3)*φ(8)

Part B (10 points)
You are going to read a list of headings and a text about cross-border marriage. Choose the most suitable headings.

A.
B.
C.
D.
E.
F.'
G.
H.
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J.