If 1²+2²+2² = 3²

2²+3²+6² = 7²

3²+4²+12² = 13²

then 6²+7²+42² = ?

The ratio of boys and girls in a class 4:5 if the number of boys is 24, find the number of girls

A wall is to be constructed with length 60m, breadth 3 m and height 5 m. How many bricks are required to construct a wall with length 30 cm, breadth 15 cm and height 20 cm

The radii of two right circular cylinders are in the ratio 4:3 and their heights are in the ratio 7:4 then the ratio of their curved surface areas is in the ratio

A radio active element "X" with a half life of 2 hours decay giving a stable element "Y". After a time of t hours the ratio of atoms is 1:7 then, the value of 

If 1/2(2x+3Y)+12/7(3x-2Y) = 1/2 and 7/2x+3y+4/3x-2y=2 then values of x and y are respectively.