Free Letter, Symbol and Number Series MCQs with Answers
299 Letter, Symbol and Number Series MCQs from Analytical and Logical Reasoning, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Series questions use numbers, letters, symbols or combinations arranged according to a hidden pattern. You may need to identify repeated operations, alternating rules, alphabetical positions, differences, reversals and mixed sequences to find a missing term or predict the next one.
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Read the Letter, Symbol and Number Series notesFree MDCAT chapter notes with key terms299 questions · page 10 of 15
- A. 42
- B. 44
- C. 46
- D. 48
Explanation: The differences are 2, 4, 6, 8, and 10, increasing by 2 each time. The next difference is 12, so 34 + 12 = 46.
Correct answer: 46- A. 95
- B. 96
- C. 98
- D. 100
Explanation: The operations alternate between adding 3 and multiplying by 2. Thus, 7 + 3 = 10, 10 × 2 = 20, and 49 × 2 = 98.
Correct answer: 98- A. 36
- B. 38
- C. 40
- D. 42
Explanation: The odd-positioned terms are 3, 5, 7, 9, increasing by 2. The even-positioned terms are 10, 18, 28, so their increases are 8, 10, and then…
Correct answer: 40- A. 343
- B. 512
- C. 625
- D. 729
Explanation: The odd-positioned terms are consecutive squares: 1², 3², 5², 7². The even-positioned terms are consecutive even cubes: 2³, 4³, 6³, so the…
Correct answer: 512- A. 40
- B. 41
- C. 42
- D. 43
Explanation: Each term is found by adding 7 to the previous term. Therefore, 35 + 7 = 42.
Correct answer: 42- A. 34
- B. 35
- C. 36
- D. 38
Explanation: The sequence increases by 6 each time. Adding 6 to 30 gives 36.
Correct answer: 36- A. 189
- B. 190
- C. 191
- D. 192
Explanation: Each term is doubled and then increased by 1. Thus, 95 × 2 + 1 = 191.
Correct answer: 191- A. 50
- B. 51
- C. 52
- D. 53
Explanation: The differences are 4, 7, 10 and 13, increasing by 3 each time. The next difference is 16, so 36 + 16 = 52.
Correct answer: 52- A. 88
- B. 90
- C. 92
- D. 94
Explanation: The differences are 1, 4, 9, 16 and 25, which are consecutive squares. The next difference is 36, so 56 + 36 = 92.
Correct answer: 92- A. 54
- B. 56
- C. 58
- D. 60
Explanation: The terms follow n × (n + 1): 1 × 2, 2 × 3, 3 × 4, and so on. The next term is 7 × 8 = 56.
Correct answer: 56- A. 178
- B. 180
- C. 182
- D. 184
Explanation: Multiply by 2, then add consecutive numbers: +1, +2, +3, +4 and +5. The next step is 89 × 2 + 6 = 184.
Correct answer: 184- A. 24
- B. 25
- C. 26
- D. 27
Explanation: The odd-position terms are 3, 7, 11, 15, increasing by 4. The even-position terms are 8, 14, 20, 26, increasing by 6, so the missing term…
Correct answer: 26- A. 75
- B. 76
- C. 77
- D. 78
Explanation: The differences are consecutive prime numbers: 3, 5, 7, 11, 13 and 17. The next difference is 19, giving 58 + 19 = 77.
Correct answer: 77- A. 16
- B. 18
- C. 20
- D. 22
Explanation: Each term is 6 less than the previous term. Therefore, 24 minus 6 gives 18.
Correct answer: 18- A. 12
- B. 13
- C. 14
- D. 15
Explanation: The sequence lists consecutive prime numbers. The prime number after 11 is 13.
Correct answer: 13- A. 26
- B. 27
- C. 28
- D. 29
Explanation: The increases are 3, 4, 5, and 6. The next increase is 7, so 20 plus 7 equals 27.
Correct answer: 27- A. 324
- B. 486
- C. 648
- D. 810
Explanation: Each term is multiplied by 3 to produce the next term. Thus, 162 multiplied by 3 is 486.
Correct answer: 486- A. 58
- B. 59
- C. 60
- D. 61
Explanation: The differences are minus 10, minus 9, minus 8, and minus 7. The next difference is minus 6, giving 60.
Correct answer: 60- A. 128
- B. 130
- C. 132
- D. 134
Explanation: Each term is twice the previous term minus 2. Applying this rule to 66 gives 66 times 2 minus 2, which is 130.
Correct answer: 130- A. 20
- B. 21
- C. 24
- D. 25
Explanation: The odd-position terms increase by 3: 1, 4, 7, 10. The even-position terms are consecutive squares: 4, 9, 16, 25.
Correct answer: 25