Question

A number is choosen at random from the number. -3, -2, -1, 0, 1, 2, 3 what will bethe probabiloty that square of this number is less then or equal to 1

Answer 1

Answer:

4/7

Step-by-step explanation:

Let "A" be the event of getting  square of the above numbers is less then or equal to 1

n(S)=7

• -3 x -3 = 9
• -2 x -2 = 4
• -1 x -1 = 1
• 0 x 0 =0
• 3 x 3 = 9
• 2 x 2 = 4
• 1 x 1 = 4

Similarly, for the positive integers.

Therefore,

n(A)=2+2=4

Therefore,

P(A)=n(A) / n(S)

=4/7.