The average of 6 numbers is 20. If a number is removed then average becomes 15. In place of removed number by adding a number 39 the average of new 6 number will be__

The total average salary of 50 employees in a company is Rs 5,000. If there are 35 male employees among these employees whose average salary is Rs 6,000, then what will be the average salary of the remaining female employees?

The diameter of a wheel is 14 cm. How many rotations will it take to cover a distance of 44 kilometres?

The difference of the circumference and radius of a circle is 37 cm. Area of the circle is

A square and an equilateral triangle are of the same perimeter. If the diagonal of the square is $$ {12\sqrt{2}}$$ cm long, then the area of the triangle is.

If the score of five students is 8,7,9,16,25, then their mean deviation will be.

$$ ({2+\sqrt{5}})$$ and $$ ({2-\sqrt{5}})$$ is a quadratic equation with roots.

Which of the following is linear equation.