Question 648731
There are 4 history courses any 1 of which can be taken
with any 1 of 9 psych courses. That is
{{{ 4*9 = 36 }}}
Any 1 of these 36 choices can be taken with any 1 of
13 math courses. That is
{{{ 36*13 = 468 }}} so far
Any 1 of these 468 choices can be taken with any 1 of
5 business courses. That is
{{{ 468*5 = 2340 }}} answer
or, you could write it in 1 line:
{{{ 4*9*13*5 = 2340 }}}