000RM.dvi

914 A British test of teachers’ mathematical background

8.An algebraic problem involvesa,b,c, and we have to write the sum

of the products, two at a time.

With which of the following statements do you agree?

A The best order isab+ac+bc.

B The best order isac+ba+cb.

C The best order isbc+ca+ab.

D The best order iscb+ab+ac.

E There is no “best” order.

Answer:

9.We wish to letter the points 1, 2, 3 in the diagram with the letterL,

M,Nin some order.

A

B C

1

2

3

With which of the following statements do you agree¿

A The best order is 1L,2M,3N.

B The best order is 1M,2N,3L.

C The best order is 1N,2L,3M.

D The best order is 1L,2N,3M.

E There is no “best” order.

Answer: