A class of 10 students includes Abby and Ben. All 10 students are arranged in a line. How many arrangements are possible if there are exactly three students between Abby and Ben?

Additional Mathematics

IGCSE&ALevel

CAIE

Exam No：0606_w24_qp_22 Year：2024 Question No：7(b)

Answer:

11.1 Recognise the difference between permutations and combinations and know when each should be used.

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