× NUST Downloads NUST UG Admissions Enter to NUST NUST Admission Policy NUST Merit Criteria `International Applicants NUST DAE Criteria NET Syllabus and Pattern NUST Eligibility Criteria FA/FSc - Apply which Program? Non FA/FSc - Apply which Program? NUST Admission through SAT/ACT NUST Admission through SAT

MCQ Problem Solving - Permutation and Combination

The CAT Online Free Test Prep MCQs Problem Solving - Permutation and Combination

Problem Solving: Permutation and Combination

Question:

Evaluate: 30! 28!

Option A:      970
Option B:      870
Option C:      770
Option D:      670
  A     B     C     D  
Show/Hide Answer and Explanation

Correct Answer: B

Explanation Video

Explanation

30! 28!

= 30 × 29 × 28! 28!

= 30 × 29 = 870
Prev       1 of 10       Next
Back to Section Page

How to Solve Permutation and Combination

For Permutation and Combination question first understand the statement and the question stem. Try to solve and click the corresponding answer option. The drop down will appear to show the correct answer and explanation.