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What is where is the number of ways of choosing k items from 28
items?

Read Solution (Total 3)

28Ck=28!/(28-k)!k!
10 years agoHelpfull: Yes(3) No(1)

Choosing k items from 28 items means 28Ck
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if the objects are distinct then it 28CK
otherwise anshwer should be K
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TCS Other Question

If x^2- 16 > 0, which of the following must be true? What is the distance between two parallel chords of length 24 cm and 32 cm in a cirle of radius 20 cm ?

(a) 4 or 28
(b) 1 or 7
(c) 2 or 14
(d) 3 or 21