Why did the United States attack Afghanistan in 2001? Afghanistan had invaded Kuwait for its oil.

Osama bin Laden, aided by the Taliban, hid in Afghanistan after the 9/11 attacks.

Intelligence reports proved that Afghanistan was planning an attack on the United States.

The leaders of Afghanistan refused to allow the United States access to its military bases.

answer

step-by-step explanation:

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."

what is the question