Free IBEW Aptitude Number Series Question and Answers 1 — Questions and Answers

Question 1: What is the following digit in the series? 13, 9, 14, 8, 15, ___

5
7 (Correct answer)
9
20

Correct answer: 7

This is an alternating series with two distinct patterns. The numbers in the odd positions (1st, 3rd, 5th) increase by 1 (13, 14, 15). The numbers in the even positions (2nd, 4th) decrease by 1 (9, 8). Following the even position pattern, the next number after 8 is 7.

Question 2: What is the following digit in this sequence? 1, 5, 9, 13, 17, _

10
15
25
21 (Correct answer)

Correct answer: 21

This is an arithmetic sequence where each subsequent number is obtained by adding a constant value to the previous one. The common difference between consecutive terms is 4 (5-1=4, 9-5=4, 13-9=4, 17-13=4). Therefore, the next digit in the sequence is 17 + 4 = 21.

Question 3: Find the following two terms in the list. 7, 18, 14, 16, 28, 14, ,

56, 12 (Correct answer)
58, 10
56, 10
57, 12

Correct answer: 56, 12

This sequence consists of two interleaved patterns. The first pattern (odd positions: 7, 14, 28) involves multiplying by 2, so the next term is 28 * 2 = 56. The second pattern (even positions: 18, 16, 14) involves subtracting 2, so the next term is 14 - 2 = 12. Thus, the following two terms are 56 and 12.

Question 4: Find the series' omitted number. 120, 60, 30, __, 7.5, 3.25

5
10
15 (Correct answer)
20

Correct answer: 15

Explanation: Even though the missing number is in the midst of this sequence, the same method as earlier can be used to solve it. Each number is related to the preceding number by dividing it by two, and it's crucial to realize that terms in a series don't necessarily have to be integers. The answer to this query's missing term is 15.

Question 5: What is the following series of numbers' next number? 7 10 15 22 31

35
40
41
42 (Correct answer)

Correct answer: 42

Explanation: Every step increases the difference between each phrase by two. Thus, the difference between the series' last displayed number and the following number should be 9 + 2 = 11. As a result, 31 + 11 = 42 is the series' following number.

Question 6: Find the omitted word. 4, 4, 8, 12, __, 32, 52

20 (Correct answer)
23
25
30

Correct answer: 20

Explanation: Finding the rule is made straightforward by knowing the Fibonacci sequence; in this instance, it is clear that the terms are the sum of the preceding two numbers. Again, the process for determining the solution is the same despite if the missing number is in the midst of the series. The solution is 20 because the previous two phrases for the missing number are 8 and 12, respectively.

Free IBEW Aptitude Number Series Question and Answers 1

What is the following digit in the series?
13, 9, 14, 8, 15, ___