Q4. Can you complete this
sequence:
13, 9, 5,
1, __ , __ ?
A4. 3
and 7
The sequence is going down (or decreasing) by 4 each
time.
Q5. Can you
complete this
sequence:
3, __ , 15, 21,
27 ?
A5.
9
The sequence is going up (or increasing)
by 6 each time.
Q6. The first four numbers of a sequence
are:
11, 15, 19, 23 ...
Which
description fits this sequence:
A. The first number is 4 and
the sequence increases by
11 each time?
B. The first number is 11 and the
sequence increases by 5
each time?
C. The first number is 11 and the sequence
decreases by 4 each
time?
D. The first number is 11 and the sequence
increases by 4 each
time?
A6.
D Did
you choose one of the other three choices? They
were VERY similar  try to read questions more
slowly.
Q7. I'm thinking of a number

Clue 1: It is less
than 30.
Clue 2: It is both a
multiple of 6 and 9
What number am I
thinking of ?
A7.
18:
18 is a multiple of both 6 and 9  so
it's a 'common multiple':
1st few Multiples of 6: 6, 12, 18, 24, 30, 36, 42
...
Ist few Multiples of 9: 9, 18, 27, 36, 45, 54, 63
...
You can see that 6
and 9 have both 18 and 36 in common (And that 18 is the LOWEST common
multiple)
Q8. 2 and 24 are a factor pair of 48.
Which is the correct
list for the remaining factor pairs?
A. 3 and
16, 4 and 12
B. 3
and 16, 4 and
12, 6 and
7
C. 1
and 48, 3 and
16, 4 and
12, 6 and
8
D. 3
and 16, 4 and
12, 6 and
8
A8. C
A misses out 1 x 24 (the most common mistake) B misses
these AND 6 x 8 D misses out LOADS
It's
just too easy to miss out just one factor ... So, it's safer
to work them out in order, starting with 1, then 2, then 3 ...
1 X
48 2 X 24 3 X 16 4 X 16 6
X 8 (8 X 6 is a repeat so you know to
stop).
