156 divided by 24 and 102 divided by 15 both have the quotient of 6 and the remainder of 12. Are the division expressions equivalent to each other or not.

what is the answer to this

it would be a on edgenuit y

the diagram below is your final answer

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."