An organisation selected $2400$ families at random and surveyed them to determine a relationship between the income level and the number of vehicles in a family. The information gathered is listed in the table below:

Monthly income (In ₹)		Number of vehicles per family
	0	1	2	3 or more
Less than ₹ 25000	10	160	25	0
₹ 25000- ₹ 30000	0	305	27	2
₹ 30000 - ₹ 35000	1	535	29	1
₹ 35000 - ₹ 40000	2	469	59	25
₹ 40000 or more	1	579	82	88

Suppose a family is chosen at random. If the probability that the family chosen is earning $₹25000-₹30000$ per month and owning exactly $2$ vehicles is $\frac{k}{800}$, then find the value of $k$.

An organisation selected $2400$ families at random and surveyed them to determine a relationship between the income level and the number of vehicles in a family. The information gathered is listed in the table below:

Suppose a family is chosen at random. Find the probability that the family chosen is earning $₹40000$ or more per month and owning exactly $1$ vehicle.

$$An organisation selected $2400$ families at random and surveyed them to determine a relationship between the income level and the number of vehicles in a family. The information gathered is listed in the table below:

Suppose a family is chosen at random. If the probability that the family chosen is earning less than $₹25000$ per month and not owing any vehicle is $\frac{k}{240}$, then find the value of $k$.

An organisation selected $2400$ families at random and surveyed them to determine a relationship between the income level and the number of vehicles in a family. The information gathered is listed in the table below:

Suppose a family is chosen at random. If probability that the family chosen is earning $₹ 35000 – ₹ 40000$ per month and owning $2$ or more vehicles is $\frac{k}{200}$, then find the value of $k$.

An organisation selected $2400$ families at random and surveyed them to determine a relationship between the income level and the number of vehicles in a family. The information gathered is listed in the table below:

Suppose a family is chosen at random. Find the probability that the family chosen is owning not more than $1$ vehicle.

The table given below shows the marks obtained by $30$ students in a test.

Out of these students, one is chosen at random. If the probability that the marks of the chosen student are $30$ or less is $\frac{k}{30}$, then find the value of $k$.

The table given below shows the marks obtained by $30$ students in a test.

Out of these students, one is chosen at random. What is the probability that the marks of the chosen student are $31$ or more? 

The table given below shows the marks obtained by $30$ students in a test.
 

Out of these students, one is chosen at random. What is the probability(in decimals) that his marks lie in the interval $21-30?$

The table given below shows the ages of $75$ teachers in a school.

A teacher from this school is chosen at random. What is the probability that the selected teacher is $40$ or more than $40$ years old?