Please help me I need this... How many 4 letter words can be constructed of the form cvcv where C is a consonant, V is a vowel and the letter y isn't used? maths
25 total letters (ni 'y's) a e i o u 20 consonants and 5 vowels
20 x 5 x 20 x 5 (This assumes letters can appear more than once)
= ..........
+4 
