Arrange twenty cubes in four piles using these clues:................How many cubes would be in each pile?

Question

Arrange twenty cubes in four piles using these clues:
1. All piles contain an even number of cubes
2. There are twice as many cubes in the first pile as in the second pile.
3. The largest number of cubes is in the first pile.
4. All piles have a different number of cubes.
5. Each pile has at least one cube.
How many cubes would be in each pile?

Answer 1

Ans
1st pile=8cubes
2nd pile=4cubes
3rd pile=6cubes
4th pile=2cubes