Which digit is the opposite of 3?

16 men can complete a piece of work in 7 days. In how many days will 28 men complete the same work?

Find the average of the following set of numbers.
132, 148, 164, 128, 120, 136

Kuldeep sells an article for ₹ 3240 and earns a profit of 20%. What is the cost price of the article?

The cost of 6 dozen apples and 8 dozen bananas is ₹ 1400. what will be the cost of 15 dozen apples and 20 dozen bananas?

Which figure would best depict the relationship between the following three classes?

Boy, player, student

Find the missing number in the following diagram?

Complete the following series.
ZIP, WIP, TIP, ?.