Free account: track your progress — Sign up free

Post-UTME Mathematics 2013 Objective — Question 23

Question 23 of 100 from the Post-UTME Screening (Post-UTME) Mathematics 2013 Objective paper, with the correct answer and a full explanation.

Find the value of K if |-2 1 1; 2 1 K; 1 3 -1| = 23

A. 1
B. 2Correct
C. 3
D. 4

Explanation

Expanding the determinant gives 9+7K=23, so K=2.

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.

Create free account

More questions from Mathematics 2013 Objective More Mathematics past papers