For the following questions answer them individually
Given below is the data of the ages of various children.
What is the difference between the mean and mode of the ages?
The Table given below presents the marks obtained by three students in five examinations.
What is the average of marks obtained by S3 per exam?
An article is sold at $$14\frac{2}{7}\%$$ profit. What is the ratio of the selling price to the cost price?
An article is sold for ₹6500 so as to earn a profit of 4%. A second article whose cost price is ₹3750,is sold at a loss of 4%. What is the overall gain or loss percent in the whole transaction?
The diameter of a right circular cylinder is decreased to one third of its initial value. If the volume of the cylinder remains the same, then the height becomes how many times of the initial height?
The Table given below presents the marks obtained by three students in five examinations.
What is the sum of marks obtained by S1 in Exam E4, S2 in Exam E1, S3 in Exam E3 and E5?
If A = $$40 \div 8 + 5 \times 2 - 4 + 4 + 5 of 3$$ and $$B = 24 \div 4(4 + 2) + 19 of  2$$, then what is the value of $$A - B$$?
In a bag,the ratio of the number of 2 rupee, 1 rupee and 50 paise coins is 3 : 4: 5. If the total amount in the bag is ₹250, then how many 1 rupee coins are there?
A sum invested at compound interest (compounded annual) amounts to ₹ 750 at the end of first year and ₹ 900 at the end of second year. What is the sum?