Out of 7 constants and 4 vowels how many words of 3 consonants and 2 vowels can be formed?  Select:	A) 25200	B) 32500	C) 45100	D) 15460	E) 36400
Number of ways of selecting (3 consonants out of 7) and (2 vowels out of 4)   = 7C3 * 4C2   = 210   Number of groups each having 3 consonants and 2 vowels = 210   Each group contains 5 letters   Number of ways of arranging 5 letters among themselves   = 5! = (5 * 4 * 3 * 2 * 1)   = 210   Required number of words = (210 * 210)   = 25200   25200ns: 25200
<result>A</result>
Out of 7 constants and 4 vowels how many words of 3 consonants and 2 vowels can be formed?