For the following questions answer them individually
The sum of 11 numbers is 660. Find their average.
The radius of a right circular cylinder is 7 cm. Its height is thrice its radius. What is the curved surface area of the cylinder?
What is the value of $$\frac{(55 + 88) \div [(3 \times 5 + 4) - 64 \div 8]}{28 \times 7 \div 56 \times 4 of (91 - 78)}$$?
If at compound interest a certain sum becomes 2 times of itself in 5 years, then in how many years it will become 8 times of itself?
The time in which a train 1800 m long, travelling at the speed of 30 kmph, will pass a signal pole is:
Marks scored by Reena are plotted on the graph. Calculate how much more marks she scored in science, than hindi?
If Ashish can complete 2/3rd the work in 22 days. In how many days will he complete the whole work?
An article is bought for Rs. 1600 and sold for Rs. 3200. Find the gain percent.
Shopkeeper gave 30% discount on the article having marked price Rs.3500. What will be the selling price of the article?