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1) The following table shows the blood groups of employees in a bank. Even C is the
blood group of an employee is AB.
By Claire

1) The following table shows the blood groups of employees in a bank. Even C is the
blood group of an employee is AB.
Blood Group
A B AB 0
Number of employees
20 40 15 25
An employee is chosen at random. Complete the following activity to find the
probability that his blood group is AB.
3
n(S)
; P(C) =
– 1-0
; n(C)
20​

About the author
Claire

in how many ways 9 distinct things can be divided into two groups containing 5 and 4 things​

1 81 X 9 =
2 69 X 7 =
3 84 X 2 =
4 96 X 3 =
5 92 X 3 =
6 39 x 7 =
7 79 X 6 =
8 29 X 6 =
9

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