Question 991442: Given 6 angles with the following measures: 30,40,50,60,130,140. What is the probability that a pair of angles is either complementary or supplementary if 2 of them are selected at random?
Answer by Fombitz(32388)   (Show Source):
You can put this solution on YOUR website! Look at all possible outcomes.
There are 30 of them .
30,40
30,50
30,60----->90
30,130
30,140
40,30
40,50----->90
40,60
40,130
40,140----->180
50,30
50,40----->90
50,60
50,130----->180
50,140
60,30----->90
60,40
60,50
60,130
60,140
130,30
130,40
130,50----->180
130,60
130,140
140,30
140,40----->180
140,50
140,60
140,130
So of the 30, 8 of them are either supplementary or complementary.
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