How many different words can be formed with letters of punjab when p and n are together?
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Let p and n are taken into one Letter x.
So now we have the word "xujab" containing 5 letters.
Now we can arrange the letters in 5! ways as there is no multiple terms involved and p and n can be arranged in 2 ways i.e. pn or np.
So number of words formed is 5!×2
So now we have the word "xujab" containing 5 letters.
Now we can arrange the letters in 5! ways as there is no multiple terms involved and p and n can be arranged in 2 ways i.e. pn or np.
So number of words formed is 5!×2
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