Question

В скринці лежать 10 однакових за формою кульок:2 білих,5 зелених,з червоних.Яка ймовірність того,що навмання взята кулька: а)зелена; б)не зелена?

Answer 1

вероятность того что шарик зеленый 5/10=1/2

не зеленых шаров 5 : вероятность 5/10=1/2

или 1-1/2=1/2

Answer 2

Probability of drawing a green ball:

To calculate the probability of randomly drawing a green ball from the box, we need to determine the total number of balls and the number of green balls.

Given that there are 10 balls in total, with 5 green balls, the probability of drawing a green ball can be calculated as follows:

Probability of drawing a green ball = (Number of green balls) / (Total number of balls)

Substituting the values, we get:

Probability of drawing a green ball = 5 / 10 = 0.5

Therefore, the probability of randomly drawing a green ball from the box is 0.5.

Probability of drawing a non-green ball:

To calculate the probability of randomly drawing a non-green ball, we need to determine the total number of balls and subtract the number of green balls from it.

Given that there are 10 balls in total, with 5 green balls, the number of non-green balls can be calculated as follows:

Number of non-green balls = Total number of balls - Number of green balls = 10 - 5 = 5

Therefore, the probability of randomly drawing a non-green ball can be calculated as follows:

Probability of drawing a non-green ball = (Number of non-green balls) / (Total number of balls)

Substituting the values, we get:

Probability of drawing a non-green ball = 5 / 10 = 0.5

Therefore, the probability of randomly drawing a non-green ball from the box is 0.5.

Please let me know if there is anything else I can help you with!