Question

40 balls are numbered 1 to 40.One ball is selected at random.The probability that the number on the chosen ball will contain the numeral "1" is  
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Answer 1

Answer:

The probability of the ball with number 1 is $\frac{1}{40}$

Step-by-step explanation:

Tip:

• Probability is defined as the ratio of the favorable outcomes from the sample space.
• Favorable outcomes is the thing to be chosen from sample space.
• Sample space is the total number of outcomes

Step1 of 1:

• Favorable outcome i.e. ball with number 1 is 1
• Total number of balls in sample space is 40
• Probability is

      $P=\frac{Favourable Outcome}{Total Outcomes} \\P=\frac{1}{40}$

Answer 2

Given,

The balls are numbered from 1 to 40.

To find,

The probability of getting a ball with 1.

Solution,

The probability of getting a ball with 1 will be 1/40.

According to the question,

The balls are numbered from 1 to 40.

We know that the following formula is used to find the probability of an event:

P(E) = Number or favourable outcomes/total number of outcomes

In this case, the total number of balls is 40 and the ball with number 1 is only 1.

So,

Probability of getting a ball with 1 = 1/40

Hence, the probability of getting a ball with 1 is 1/40.