because

n+ 1 & gt； n- 1

The larger the denominator, the smaller the fractional value, so

M & gtP

p-N = N/(N+ 1)-(N- 1)/N

=[n^2-(n- 1)(n+ 1)]/n(n+ 1)

= 1/n(n+ 1)>0

therefore

P> ordinary

therefore

M>P> noun (abbreviation of noun)