Post-UTME Mathematics 2010 Objective — Question 2
Question 2 of 10 from the Post-UTME Screening (Post-UTME) Mathematics 2010 Objective paper, with the correct answer and a full explanation.
Advertisement
In how many ways can 3 boys and 2 girls sit in a row, if just the two girls are to sit together?
- A. 120
- B. 24
- C. 48Correct
- D. 36
Explanation
Treat the 2 girls as one block: 4 units arrange in 4!=24 ways; the 2 girls within their block arrange in 2!=2 ways. Total=24×2=48.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.