How many words can be formed by using all letters of the word ‘BIHAR’ ?  Choose the correct choice from the following choices.
A) 110
B) 120
C) 130
D) 140
E) None
Solution   The word BIHAR contains 5 different letters.   Required number of words = 5P5 = 5 ! = (5 x 4 x 3 x 2 x 1) = 120   Answer 120
<result>B</result>
How many words can be formed by using all letters of the word ‘BIHAR’ ?