SSC CGL MAINS MATHS QUIZ

A batsman has a certain average of runs for 16 innings. In the 17 th innings he scored 103 runs thereby increasing his average by $2.75$ runs. What will be his average after17th innings?

Average weight of 30 students in a class increase by $2.5 \mathrm{~kg}$ when one of the students weighting $50 \mathrm{~kg}$ is replaced by a new student. What is the weight (in $\mathrm{kg}$ ) of new student?

What is the average of first 300 natural numbers?

The average score in English of 82 students of class IX and class $\mathrm{X}$ was $64.25$. The number of students in class IX were 10 more than those in class $X$.The average score of students in class IX was $33.33 \%$ more than that of students in class $\mathrm{X}$. The average score of students in class IX is:

The average age of a family of 5 members is 20 years. If the age of the youngest member be 10 years then what was the average age of the family at the time of the birth of the youngest member?

There are 36 students in hostel. If number of students increase by 9 , then the expenses of the mess increased by ₹45 per day while the average expenditure per head diminishes by Rs 2 . Find the Original expenditure of the mess.

The average of the three numbers is 58. The first number is $\frac{3}{4}$ of the third number. If the third number is 24 more than the second number, then what will be the difference between the first and second number?

The average age of Shyam and his two children is 19 years and the average age of Shyam's wife and the same children is 18 years. If the age of Shyam is 35 years the age of his wife is:

In a class, there are 15 students at the age of 18 years, 12 students at the age of 23 years and 7 students at the age of 13 years. What is the average age of a student?

The average value of the numbers $15,21,32$, $35,46, \mathrm{x}, 59,65,72$ should be greater than or equal to 43 but less than or equal to 44 . Then the value of $x$ should be: