Question

20.A number is selected from the set {1, 2, 3, 4, 5, 6, 7, 8}. What is the probability that it will be a root of the equation x2 - 6x+8 = 0? a) 1/2 1/3 d) 1/6 4 b)1/4​

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