1. Which number should come next in this series?
25,24,22,19,15
A. 4
B. 5
C. 10
D. 14
Correct answer: C
Explanation: The pattern decreases progressively: -1, -2, -3, -4, -5
2. Which number should come next in this series?
3,5,8,13,21,
A. 4
B. 21
C. 31
D. 34
Correct answer: D
Explanation: 3+5=8, 5+8=13 and so on.
3. Which number should replace the question mark?
17 8 5 5
13 7 5 4
6 12 6 3
10 6 4 ?
A. 4
B. 5
C. 6
D. 7
Correct answer: A
(For each row the sum of the first two columns is equal to the multiple of the last two columns)
4. Which number should replace the question mark?
8 5 21
35 32 12
32 28 31
4 ? 28
A. 3
B. -2
C. -6
D. 48
Correct answer: C
(For each row subtract the second column from the first column. The result is equal to the sum of the digits in the last column.)
