Which number replaces t in this equation?
1.2⁄t = 1.2 + 3.64 − 4.84
a) 0.21
b) 0
c) 2.2
d) 2
e) none of these
29 3⁄5 of 3⁄8 is:
a) 3⁄15
b) 6⁄15
c) 9⁄8
d) 9⁄40
e) none of these
30 60% of 340 is greater than:
a) 190
b) 220
c) 240
d) 260
e) none of these
Numerical Test 7 (Number Series)
So far we have seen examples of numerical tests that have tended to focus on mathematical ability, with a small amount of problem solving involved. Now we turn our attention to some more difficult numerical ability tests that expressly address problem solving – how well you can identify which mathematical calculations you need to perform in order to reach the correct answer.
It is less important in this type of test to be able to carry out straightforward mathematical calculations – the emphasis is on how you get to that point. Note again that as in Test 6 the actual mathematical calculations involved are sometimes quite simple once you know what they are.
Type of test: Speed/Power
Typical length: 15–25 questions
Typical time allowed: 20–30 minutes
Used for: Intermediate/higher level
Frequency of use: Not that common in this ‘pure’ form but items of this type crop up from time to time.
This test contains a set of number series, arranged in pairs with two numbers in each square. In this test your task is to look at the number in the top left diagonal of the square and work out how it relates to the number in the bottom right diagonal of the same square. There are five squares in each set and they all share the same rule for relating the top number to the bottom number. Occasionally you may come across a version of this test that asks you to identify the odd one out, rather than the next in the sequence. With this type of test, the principle and method of solving the question are identical.
When you have worked out what the rule is, you should be able to work out the missing number. Give yourself 25 minutes.
1
a) 6
b) 7
c) 8
d) 9
2
a) 9
b) 10
c) 12
d) 14
3
a) 5
b) 6
c) 4
d) 3
4
a) 4
b) 5
c) 6
d) 8
5
b) 16
b) 18
c) 19
d) 20
6
a) 24
b) 19
c) 21
d) 25
7
a) 18
b) 20
c) 24
d) 26
8
a) 14
b) 16
c) 17
d) 18
9
a) 10
b) 15
c) 25
d) 50
10
a) 7
b) 8
c) 9
d) 12
11
a) 27
b)
