A box contains 10 balls, of which 4 are red and 6 are blue. If one ball is drawn

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Question: A box contains 10 balls, of which 4 are red and 6 are blue. If one ball is drawn, what is the probability that it is not red?

Options:

Correct Answer: 3/5

Solution:

Probability of not red = Number of non-red balls / Total balls = 6/10 = 3/5.

A box contains 10 balls, of which 4 are red and 6 are blue. If one ball is drawn, what is the probability that it is not red?

A box contains 10 balls, of which 4 are red and 6 are blue. If one ball is drawn, what is the probability that it is not red?

Step 1: Identify the total number of balls in the box. There are 10 balls.
Step 2: Identify how many of those balls are red. There are 4 red balls.
Step 3: Calculate the number of non-red balls. Since there are 10 balls total and 4 are red, the number of non-red balls is 10 - 4 = 6.
Step 4: Write down the formula for probability. Probability of an event = (Number of favorable outcomes) / (Total outcomes).
Step 5: Substitute the values into the formula. The number of non-red balls is 6 and the total number of balls is 10.
Step 6: Calculate the probability. Probability of not red = 6 / 10.
Step 7: Simplify the fraction. 6 / 10 can be simplified to 3 / 5.

Probability – The likelihood of an event occurring, calculated as the ratio of favorable outcomes to the total number of possible outcomes.
Complementary Events – Events that cover all possible outcomes; in this case, the event of drawing a non-red ball is the complement of drawing a red ball.