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PROBLEM 21

Find the                 value of x and y respectively if

                  

(a)  –3, –2 (b) –5, –3  (c) –2, –5 (d) – 3, – 5  (UME 2008, Question 23 set U03, type A)

 

Solution

Answer: Option D

 

Problem 22

If , what is the value of r

(UME 2008, Question 24 set U03, type A)

 

Solution

Tip and time saving techniques

                                                

Back to the given problem

                                                

                                 Answer: Option D

 

Problem 23

If Q = , then  is    (a)  –50  (b)  –22   (c)  22   (d)  50  (UME 2009, Question 22 set U03)

 

Solution  

Answer Option C

 

Problem 24

If P = , evaluate x  (a)  –5  (b)  –2  (c)  2    (d) 5

(UME 2009, Question 23 set U03)

 

Solution