For the following questions answer them individually
The average of 21 consecutive natural numbers is 53. What is the value of the smallest of these 21 numbers?
A shopkeeper buys three products a, b, c and sells them at 20%, 30%, 40% profit, respectively. What is ratio of the selling price of these products, if the ratio of their cost prices is 4:3 :2?
The average of 5 numbers, arranged in a row, is 309. The average of the first two of these numbers is 431 and the average of the last two of these numbers is 231.5. What is the value of the number at the center of the row?
What is the compound interest on ₹24,000 for 2 years at the rate of 10% per annum, if interest is compounded annually?
Study the given pie-chart and answer the question that follows.
The pie-chart shows the percentage distribution of the number of different types of chocolates distributed by Akanksha to the residents of a children's home, as percentages of all the chocolates taken together, that were distributed by her to these residents.
The average number of chocolates of Dairy Milk, 5-Star and Snickers taken together is equal to the number of chocolates distributed of which of the given types?
A boat takes 16 minutes and 24 minutes to cover a certain distance downstream and upstream, respectively. If the speed of the boat in still water is 15 km/h, find the speed of the stream.
Two successive discounts of 20% and 30% are given while selling an article. What is the ratio of the marked price of the article to its selling price?
The average of five terms is 40. If the first four terms are given as 50, 52, 35 and 46, find the fifth term.
A train running at the speed of $$\frac{140}{9}$$ m/sec, crosses a pole in 27 sec. Find the length of the train.
Select the number that will come in place of the question mark (?) in the following mathematical statement.
$$\frac{5}{9}$$ of $$\frac{11}{14}$$ of 42% of $$540= ?^{2}-45$$