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Example on Sarrus Rule when finding determinant of 3x3 matrix
UTME 2014 Question 24
visit http://mca-biz.com/wxHKv for the question/ solution of this particular question

This method only works for 3×3 matrices. Given a matrix A of order 3×3.
To apply sarrus rule, copy the first and second column of A to form fourth and fifth columns. The determinant of A is then obtained by adding the products of the three “DOWNWARD DIAGONALS” and subtracting the products of the three “UPWARD DIAGONALS” as shown


Thus, the determinant of 3 × 3 matrix A is given by the following
a₁b₂c₃ + b₁c₂a₃ + c₁a₂b₃ – a₃b₂c₁ – b₃c₂ a₁ – c₃ a₂ b₁

For solution on Utme and waec past questions on maths visit http://mca-biz.com/zpA5w

Mathematically in base 6, Digit 7 does not exist. So the question is wrong. Take a good and observant look at the question again. 72₆ cannot exist. It is totally out of place when working in base 6

Kylekent59:
No 4 is correct naa. 1122(d)

(7x6^1)+(2X6^0)=44
44 to base 3 is 1122. But d technique of d question is not correct, cus dey wana knw if u are intelligent in observing question. Nice one ops. Most companies set pple up with these questions

Question 4
Convert 72₆ to a number in base 3
A. 2211
B. 2121
C. 1212
D. 1122
UTME 2012;type yellow
Solution
You don't need to work the question, because in base 6, digit 7 does not exist. (0,1,2,3,4,5 are the allowed numbers in base 6)

Question 3
UTME 2013, Type I, Question 41
http://mca-biz.com/NYARh

Question 2
The bar chart above shows the allotment of time (in minutes) per week for selected subjects in a certain school. What is the total time allocated to the six subjects per weeks?
(A) 200mins (B) 460mins (C) 720 mins (D) 960 mins


Solution
The total time from the given graph above is
80+160+200+80+120+70=710
None of the options are correct
UTME 2013, Type I, Question 40
http://mca-biz.com/cdnvn

I have to do this compilation so that students sitting for UTME do not fall into the pitfall of just "playing poll" with the options. It is better for them to omit shading such answer because of negative marking, if they notice the answer they got is not in the potion provided
You can visit http://mca-biz.com/zpA5w to all solution to JAMB/UTME past questions on maths from 2000-2015

Question 1
UME 2008, Question 2 on Number Based System
http://mca-biz.com/Auis9

like the likes of sarrki

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