Four letter words from the letters of ROSE, with no letter repeated, number:
A16
B24
C12
D36
Answer & Solution
Correct answer: B. 24
1. The first place has 4 choices, then 3, then 2, then 1.
2. Multiply those together.
3. The count is 24.
_Source: syllabus Mathematics, Chapter 7, Permutations and Combinations._
Keep practising Permutations and Combinations
Browse all Permutations and Combinations questions for CAT, or explore more Quantitative Reasoning topics.