Total number of letters in the word NEIGHBOURHOOD = 13
Total number of repeated letters = 2+3 (H is appearing twice and O is appearing 3 times)
So total unique ways to arrange the letters of the word NEIGHBOURHOOD = 13!/(2! *3!) = 518918400
Option 4)
Mathematics is not a hurdle...It is a tool to achieve your goals .
Unknown
There r few things whch we knw whch r nt capable of mathmatical reasoning nd when these can nt it is a sign dt our knowledge of them is very smal nd confusd nd where a mathmaticl reasing can be had . It is as dark a foly to make use a candle stick as to g