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# Activity : Note the frequency of two-wheelers, three-wheelers and four-wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.

To do:

We have to find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.

Solution:

After observing two-wheelers, three-wheelers and four-wheelers going past during $8:00$ to $9:00$ AM, in front of the school gate, we get the following data:

Type of vehicle | Frequency |

Two wheelers | 500 |

Three wheelers | 200 |

Four wheelers | 100 |

Therefore,

Total number of vehicles $= 500 + 200 + 100$

$= 800$

Number of two wheelers observed $= 500$

Therefore,

The probability of observing two wheelers $= \frac{500}{800}$

$= \frac{5}{8}$

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