From the list of telephone numbers of $100$ employees of a factory, the following frequency distribution of their unit place digit (for example, in the number $25828573$, the unit place digit is $3$) is given in the table below:
Unit digit $0$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ Frequency $8$ $9$ $12$ $15$ $10$ $7$ $12$ $10$ $9$ $8$
Find the probability that a randomly selected employee has a telephone number with unit digit $3$.
| Unit digit | $0$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ |
| Frequency | $8$ | $9$ | $12$ | $15$ | $10$ | $7$ | $12$ | $10$ | $9$ | $8$ |
Find the probability that a randomly selected employee has a telephone number with unit digit $3$.
- A$0.17$
- B$0.15$
- C$0.13$
- D$0.10$
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Similar Questions
Two dice are thrown simultaneously $500$ times. Each time the sum of two numbers appearing on their tops is noted and recorded as given in the following table:
Sum Frequency $2$ $14$ $3$ $30$ $4$ $42$ $5$ $55$ $6$ $72$ $7$ $75$ $8$ $70$ $9$ $53$ $10$ $46$ $11$ $28$ $12$ $15$
If the dice are thrown once more,what is the probability of getting a sum less than or equal to $5$?
| Sum | Frequency |
| $2$ | $14$ |
| $3$ | $30$ |
| $4$ | $42$ |
| $5$ | $55$ |
| $6$ | $72$ |
| $7$ | $75$ |
| $8$ | $70$ |
| $9$ | $53$ |
| $10$ | $46$ |
| $11$ | $28$ |
| $12$ | $15$ |
If the dice are thrown once more,what is the probability of getting a sum less than or equal to $5$?
Medium
View SolutionThe probability of the event 'the sun rises in the east' is .............
Easy
View Solution$A$ die is thrown $1000$ times and the outcomes were recorded as follows:
Outcome $1$ $2$ $3$ $4$ $5$ $6$ Frequency $180$ $150$ $160$ $170$ $150$ $190$
If the die is thrown once more,then the probability that it shows $5$ is:
| Outcome | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ |
| Frequency | $180$ | $150$ | $160$ | $170$ | $150$ | $190$ |
If the die is thrown once more,then the probability that it shows $5$ is:
Easy
View SolutionTwo coins are tossed $1000$ times and the outcomes are recorded as below:
Number of heads $2$ $1$ $0$ Frequency $200$ $550$ $250$
Based on this information,the probability for at most one head is
| Number of heads | $2$ | $1$ | $0$ |
| Frequency | $200$ | $550$ | $250$ |
Based on this information,the probability for at most one head is
Medium
View Solution$50$ families with $2$ children were selected randomly and the following data were recorded:
Number of girls in a family $0$ $1$ $2$ Number of families $10$ $32$ $8$
If a family is chosen at random,compute the probability that it has: $(1)$ two girls,$(2)$ one girl,$(3)$ no girl.
| Number of girls in a family | $0$ | $1$ | $2$ |
| Number of families | $10$ | $32$ | $8$ |
If a family is chosen at random,compute the probability that it has: $(1)$ two girls,$(2)$ one girl,$(3)$ no girl.
Medium
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