{-10, -6, -5, -4, -2.5, -1, 0, 2.5, 4, 6, 7, 10}
A number is to be selected at random from the set above. What is the probability that the number selected will be a solution of the equation (x-5)(x+8)(2x-5) = 0? Pick.
A) 1/12  B) 1/6  C) 1/4  D) 1/3  E) 1/2
Roots of the equation (x-5)(x+10)(2x-5)=0 are x=5,x=-8 and x=5/2=2.5. So, one solutions present in our set of 12 distinct numbers, therefore P=1/12   1/12nswer: 1/12.
<result>A</result>
{-10, -6, -5, -4, -2.5, -1, 0, 2.5, 4, 6, 7, 10}
A number is to be selected at random from the set above. What is the probability that the number selected will be a solution of the equation (x-5)(x+8)(2x-5) = 0?