Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?

If 5x-3x = 2x²/7 Find x?

324 ^1/2 ÷ 64 ^1/2 = ........

If a+b=7 and √b²-9 =4. Find 'a'?

The master bedroom of area 256 sq.ft.of a new building has been completely paved with 16 vitrified square tiles. What is the length of the tile used?

When a number 'x' is divided by '4' we get the cube of another number, 'y'. Find 'x' if y³<10