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Math 11 Chapter 7
Permutation, Combination and Probability
Test - 2
1.
n
C
r
=
a) 1/r!
n
P
n
b) 1/r!
n
P
p
c) 1/r!
n
P
r
d) 1/r!
r
P
r
2.
Number of diagonals that can be formed by joining the vertices of 10 sided figure is?
a) 30
b) 38
c) 35
d) 36
3.
15
C
11
+
15
C
12
=
16
C
13
a) False
b) True
4.
If a fair coin is tossed three times then the total outcomes are 3.
a) True
b) False
5.
P(A U B) = P(A) + P(B) - P (AI B) where A & B are disjoint.
a) True
b) False
6.
The probability that an event E does not occur is 1- P(E).
a) False
b) True
7.
From a box containing slips numbered 1,2,3,4,5 one slip is picked up. The probability for the number on the slip is a prime number is 1/5.
a) True
b) False
8.
A and B are said to be equally likely events if each one of them has?
a) different number of chances of occurrence.
b) equal number of chances of occurrence.
c) no chances of occurrence.
d) different or equal number of chances of occurrence.
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