Part 15 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 15Sample questions from Part 15
Here are a few questions from this part. Take the full test to answer all 20 and get your score.
Sample question 1
Solve: 1,4,9,16,25,36,49,64,____?
- 72
- 75
- 81
- 90
Answer: 81
The series is the perfect squares: 1², 2², ... 8² = 64.
The next is 9² = 81.
The next is 9² = 81.
Sample question 2
A5 D2 G125 J625 M3125____?
- P15525
- P15625
- 015525
- 015625
Answer: P15625
Ans. (2) P15625- the pattern is the next 2
letters from the alphabet and the number
multiplied by 5 to next one
letters from the alphabet and the number
multiplied by 5 to next one
Sample question 3
Solve: 2187, 729, 243, 81, 27, 9,_____?
- 6
- 3
- 4
- 2
Answer: 3
Ans. (2) 3
divide 2187 by 3 you'll get 729, then the next
and so on
divide 2187 by 3 you'll get 729, then the next
and so on
Sample question 4
Solve :13 -21 34 -55 89____?
- -95
- 104
- -123
- -144
Answer: -144
Ans.-144
Subtract
13-34=-21
-21-(-55)= 34
34-89=-55
-55-89=-144
Subtract
13-34=-21
-21-(-55)= 34
34-89=-55
-55-89=-144
Sample question 5
Solve: AZ CX EV GT___?
- IR KP
- IR KQ
- IS KA
- IS KP
Answer: IR KP
Ans. (1) IR KP
Use the equivalent ascending and descending
letters in the alphabet
Use the equivalent ascending and descending
letters in the alphabet