Question
The number of words of four letters containing equal number of vowels and consonants, where repetition is allowed, is a. b. c. d.
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Given flags of different colours, how many different signals can be generated if each signal requires the use of flags, one below the other?Question 2
In a conference 10 speakers are present . if wants to speak before & wants to speak after then the number of ways all the 10 speakers can give their speeches with the above restriction if the remaining seven speakers have no objection to speak at any number is Question Text | The number of words of four letters containing equal number of vowels and consonants, where repetition is allowed, is
a. b.
c.
d. |