46. At the meeting, 6 speakers: A, B, V, G, D, E should speak. In how many ways can the order of their speeches be arranged if B must speak immediately after A.
A number or a short expression. Spacing and $ signs are ignored.
Official solution
46. Let's take just 5 speakers: A, B, C, D, E. The order of their speeches can be arranged in 5!=120 ways. If B speaks immediately after A, the number of ways remains the same.
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