An engineering student has to secure 25% marks to pass. He gets 45 and fails by 45 marks. Find the maximum marks.

The point P (a,b) is first reflected in origin to P1 and P1 is reflected in Y­axis to (4,­3). The co­-ordinates of point P are

On dividing 8a2b2c2 by 4a2, we get

Find k, if the line 2x- ­3y = 11 is perpendicular to the line 3x + ky = -­4?

Azhar is 4 times as good a workman as Balaraj and therefore is able to finish a job in 45 days less than Balaraj. Working together, they can do it in:

Coefficient of x2 in 6x3 + 4x2 + 2x + 3 is

A factory buys 7 machines. 2 Machine­A, 4 Machine­B and rest Machine­C. Prices of the machines are Rs 56000, Rs 45000 and Rs 30000 respectively. Calculate the average cost of these machines.

Find 2 consecutive natural numbers, sum of whose squares is 25.