In the given figure, two squares shown in the figure have the arm of 12 cm and 8 cm. then find out the area of shaded part?

Akshay has 30 articles, each having the same cost price. He marked the price of each article at 30% above its cost price. He sold 15 of the articles at a discount of 20% each, and the remaining 15 articles at a discount of 10% each, thereby gaining a total profit of ₹630. What was the cost price of each article?

A principal increases by 21% over 2 years with compound interest. What will be the simple interest in 4 years at the same interest rate of Rs 1000?

The following line graph gives the percentage of the number of candidates who qualified an examination out of the total number of candidates who appeared for the examination over a period of seven years from 1994 to 2000.

The difference between the percentage of candidates qualified to appeared was maximum in which of the following pairs of years?

$$ {\sqrt{784}} × \sqrt{6.25} + 56\%\ of\ 450=?+186$$

The sum of three consecutive odd natural numbers each divisible by 3 is 63. What is the largest among them?