the probability of chosoing randomly a number c from the set {1,2,3, ,9} such that the quadratic - Maths - Probability

Question

the probability of chosoing randomly a number c from the set
{1,2,3, ,9} such that the quadratic equation x2+4x+c has
real roots is ______________ ans is 4/9 how to solve this?

Amit Roy · Accepted Answer

the probability of chosoing randomly a number c from the set {1,2,3,....,9} such that the quadratic equation x2+4x+c has real roots is...______________ ans is 4/9..how to solve this?

the probability of chosoing randomly a number c from the set {1,2,3,....,9} such that the quadratic equation x²+4x+c has real roots is...______________ ans is 4/9..how to solve this?