NECO Mathematics 2007 Objective — Question 4
Question 4 of 60 from the National Examinations Council (NECO) Mathematics 2007 Objective paper, with the correct answer and a full explanation.
Advertisement
Find the determinant of the matrix [[1,3,2],[0,4,3],[2,-5,4]].
- A. 3
- B. 14
- C. 29
Explanation
|A| = 1(4x4-3x(-5)) - 3(0x4-3x2) + 2(0x(-5)-4x2) = 1(31) - 3(-6) + 2(-8) = 31+18-16 = 33.
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.