Part 8 of our Numerical Ability reviewer has 20 practice questions in the style of the Civil Service Exam. Answer them in order, read the explanation after each one, and check your score against the 80% passing mark at the end. Questions and choices are reshuffled every time you retake the part.
Start Part 8Sample questions from Part 8
Here are a few questions from this part. Take the full test to answer all 20 and get your score.
Sample question 1
2187, 729, 243, 81, 27, 9, ____?
- 6
- 3
- 4
- 2
Answer: 3
next number in the sequence is 3. Notice that the numbers in the pattern were
divided by 3 to get the next number. Therefore, you divide 2187 by 3 you’ll get 729,
then the next and so on.
divided by 3 to get the next number. Therefore, you divide 2187 by 3 you’ll get 729,
then the next and so on.
Sample question 2
1, 4, 9, 16, 25, 36, 49, 64, ___ ?
- 72
- 75
- 81
- 90
Answer: 81
81 – you can get this by squaring the numbers (1×1=1), (2×2=4), (3×3=9) and so
on…
on…
Sample question 3
13 -21 34 -55 89 ___?
- -95
- 104
- -123
- -144
Answer: -144
-144 – subtract the 3rd and 1st to get the 2nd number, do the same to the next 3
sets
sets
Sample question 4
AZ CX EV GT ____?
- IR KP
- IR KQ
- IS KQ
- IS KP
Answer: IR KP
IR KP – Use the equivalent ascending and descending letters in the alphabet
Sample question 5
A5 D25 G125 J625 M3125 ____?
- P15525
- P15625
- O15525
- O15625
Answer: P15625
P15625 – the pattern is the next 2 letters from the alphabet and the number
multiplied by 5 to get the next one…
multiplied by 5 to get the next one…