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Maths Permutations & Combination General Single Correct MCQ
Published on: August 14, 2026

The streets of a city are arranged like the lines of a chess board. There are m streets running North to South & 'n' streets running East to West. The number of ways in which a man can travel from NW to SE corner going the shortest possible distance is:

A
B
C
D

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The correct answer is:
D

Here we should go (n –1) steps to east and (m –1)

steps to south so total steps which we have to go are (m + n – 2) ways.

Hence total no. of ways = m + n – 2C m–1 . n –1C n–1 =

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