we know that the commutative property of multiplication states that when finding a product, changing the order of the factors will not change their product. ...(a X b = b X a)
eg: 3/4 X 5/6 X 2/5
so according to the commutative property of multiplication ...we can rearrange these three numbers in any way we want for easy calculations ..like ..
2/5 X 3/4 X 5/6 = 30/120 = 1/4 ...
i feel it would be easy to multiply small numbers first so i arrange it in that way ..so it makes the problem easy ...anyways commutative property is there which allows us to rearrange the numbers in any way we want ...
Hope it helps !!!