If the circumference of a circle is 4.4 m, then the area of the circle (in m²) is :

A person bought 8 quintals of rice for certain rupees. After a week, he sold 3 quintals of rice at 10% profit, 3 quintals of rice with neither profit nor loss and 2 quintals at 5% loss. In this transaction what is the profit? 

A, B and C can do a work in 6, 12 and 24 days respectively. In what time will they finish the work while working together?

A farmer has 945 cows and 2475 sheep. He farms them into flocks, keeping cows and sheep separate and having the same number of animals in each flock. If these flocks are as large as possible, then the maximum number of animals in each flock and total number of flocks required for the purpose are respectively 

In a business A and B gained some amount in a certain ratio. B and C received the profit in the ratio as that of A and B. If A received ₹ 6,400 and C received ₹ 10,000. Find the share of B 

What will come in place of question mark(?) in the following number series?
11, 57, 149, 333, 701 (?)

The average of 21 consecutive natural numbers is 53. What is the value of the smallest of these 21 numbers?