Question

A number is selected from the set {1,2,3,4,5,6,7,8}. Find the probability that it is a root of the equation

2 − 6 + 8 = 0​

Answer 1

Answer:

There are 8 numbers.

The roots of the equaton x

2

−6x+8=0 are 2 and 4.

The number of favourable outcomes is 2.

Therefore,

Required probability =

8

2

=

4

1

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