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A question paper on mathematics consists of twelve questions divided
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10 Feb 2021, 07:00
Expert Reply
00:00
A
B
C
D
E
Difficulty:
45%
(medium)
Question Stats:
43%
(01:52)
correct 57%
(02:42)
wrong
based on 14
sessions
HideShow
timer Statistics
A question paper on mathematics consists of twelve questions divided into three parts A, B and C, each containing four questions, in how many ways can an examinee answer five questions, selecting at least one from each part?
I "solved" this exercise very similarly, but I multiplied by 6 (permutations of the 3 parts) so I would say 1248. Can someone confirm which one is correct and why? I'm not sure 100% since this is not a strong subject for me.
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