many times will the buttons of a typewriter be pressed to write the numbers 121 to 1346?

The product of two consecutive even numbers is 168. Find the sum of the numbers?

Which of the following numbers is divisible by 25?

An office opens at 10 am and closes at 5 pm. The lunch break is of 30 minutes. What is the ratio of lunch break and total office hours?

The number of girls in a class is 20% more than the number of boys. There are total 66 students in this class. If 4 more girls are admitted in the class, then the ratio of the number of boys and girls will be?

The ratio of the heights of Ram and Rahim is 7 : 8. If Rahim's height is 66 inches, then the height of Ram is?

3¹¹ + 3¹² + 3¹³ + 3¹⁴ is divisible by which of the following?

The mean of 20 items is 55. If two items 45 and 30 are removed, what will be the new mean of the remaining items?