Free PSEE Number Series Question and Answers 1 — Questions and Answers

Question 1: Think about the subsequent series: 23, …, 31, 37. What number is missing?

29 (Correct answer)
34
26
28

Correct answer: 29

The sequence 23, ..., 31, 37 consists of prime numbers. A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. The prime number that comes directly after 23 and before 31 is 29. Therefore, 29 is the missing number in the sequence.

Question 2: Think about sequences 26, 24, 20, and 14. What figure should come after that?

8
6 (Correct answer)
10
12

Correct answer: 6

Analyze the differences between consecutive numbers: 26 - 24 = 2, 24 - 20 = 4, 20 - 14 = 6. The differences are increasing by 2 each time (2, 4, 6). Following this pattern, the next difference should be 8. Subtracting 8 from the last number in the sequence gives 14 - 8 = 6. So, 6 is the next figure.

Question 3: Think about the sequences 5, 6, 11, and 17. What figure should come after that?

24
28 (Correct answer)
48
64

Correct answer: 28

This sequence follows a pattern similar to the Fibonacci sequence, where each number is the sum of the two preceding numbers. Starting with 5 and 6: 5 + 6 = 11, and 6 + 11 = 17. Following this rule, the next number in the sequence will be the sum of the last two numbers: 11 + 17 = 28. Therefore, 28 is the next figure.

Question 4: Think about sequences 3, 6, 11, and 18. What figure should come after that?

22
25
27 (Correct answer)
29

Correct answer: 27

Examine the differences between consecutive numbers: 6 - 3 = 3, 11 - 6 = 5, 18 - 11 = 7. The differences are consecutive odd numbers (3, 5, 7). Following this pattern, the next difference should be 9. Adding 9 to the last number in the sequence gives 18 + 9 = 27. So, 27 is the next figure.

Question 5: Think about the sequences 6, 12, 24, and 48. What figure should come after that?

48
60
86
96 (Correct answer)

Correct answer: 96

This is a geometric sequence where each number is obtained by multiplying the previous number by 2. Starting with 6: 6 * 2 = 12, 12 * 2 = 24, and 24 * 2 = 48. Following this pattern, the next number in the sequence will be 48 * 2 = 96. Therefore, 96 is the next figure.

Question 6: Think about the subsequent series: 26, 21, …, 11, 6. What number is missing?

10
16 (Correct answer)
27
29

Correct answer: 16

Observe the differences between the given numbers: 26 - 21 = 5, and 11 - 6 = 5. This indicates a consistent pattern where each number is 5 less than the previous one. To find the missing number, subtract 5 from 21: 21 - 5 = 16. The sequence is 26, 21, 16, 11, 6.

Question 7: Think about sequences 25, 33, 41, and 49. What figure should come after that?

50
52
57 (Correct answer)
60

Correct answer: 57

Examine the differences between consecutive numbers: 33 - 25 = 8, 41 - 33 = 8, 49 - 41 = 8. The pattern shows that each number is obtained by adding 8 to the previous number. Following this consistent pattern, the next number in the sequence will be 49 + 8 = 57. Therefore, 57 is the next figure.

Free PSEE Number Series Question and Answers 1

Think about the subsequent series: 23, …, 31, 37.
What number is missing?