Home › CAT › Quantitative Aptitude › Permutations and Combinations › If one event can happen in m ways and then anoth…
If one event can happen in m ways and then another in n ways, the pair happens in:
Am times n ways
Bm plus n ways
Cm minus n ways
Dm over n ways
Answer & Solution
Correct answer: A. m times n ways
1. Each way of the first pairs with every way of the second.
2. So the counts multiply.
3. The total is m times n.
_Source: NCERT Class 11 Mathematics, Chapter 7, Permutations and Combinations._
Related questions
Signals using exactly 4 flags out of those 5 different flags number:Signals using exactly 3 flags out of 5 different flags number:Three digit even numbers from the digits 1 to 6, with repetition allowed, number:The number of ways to arrange all 5 different flags on a staff is:The relation linking arrangements and selections of r objects from n is nPr equals:Permutations of n objects where p are alike and the rest all differ number:The number of permutations of n different objects taken r at a time, with no repetition, iThe value of 6 factorial is: