FAST-NU Advanced Mathematics — Permutations, Combinations and Probability
Permutations, Combinations and Probability is part of the Advanced Mathematics section of FAST's BS CS/Engineering admission test (usually 50 of the 120 MCQs, 50% of the marks). It breaks into 3 subtopics, and we hold 61 FAST-pattern practice MCQs on it, each with a written explanation. Tap a subtopic below to practise just that.
Subtopics (3)
How Permutations, Combinations and Probability is tested
Across the 7 FAST-pattern papers on ParhaiKrlo, Permutations, Combinations and Probability accounts for 21 questions. It appears in all 7, about 3 questions a paper. The heaviest was FAST Past Paper 07, with 3 questions.
| Paper | Questions |
|---|---|
| FAST Past Paper 07 | 3 |
| FAST Past Paper 06 | 3 |
| FAST Past Paper 05 | 3 |
| FAST Past Paper 04 | 3 |
| FAST Past Paper 03 | 3 |
| FAST Past Paper 02 | 3 |
| FAST Past Paper 01 | 3 |
Permutations, Combinations and Probability MCQs from the FAST-pattern papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · FAST Past Paper 07 · Permutations, Combinations and Probability
The value of 4! is:
- A.4
- B.16
- C.24
- D.10
Show answer
Answer: C. 24 — 4! = 4 × 3 × 2 × 1 = 24.
- Q2 · FAST Past Paper 06 · Permutations, Combinations and Probability
The number of ways of choosing 1 item from 6 different items is:
- A.1
- B.36
- C.720
- D.6
Show answer
Answer: D. 6 — Any one of the 6 items can be chosen: ⁶C₁ = 6.
- Q3 · FAST Past Paper 05 · Permutations, Combinations and Probability
The number of ways to arrange 3 different books in a row is:
- A.3
- B.6
- C.9
- D.1
Show answer
Answer: B. 6 — 3! = 3 × 2 × 1 = 6.