MDCAT (Medical & Dental) Logical Reasoning: Cause & Effect MCQs

Practice Cause & Effect MCQs for MDCAT (Medical & Dental) Logical Reasoning — topic-wise sets with solved answers.

MDCAT (Medical & Dental) Logical Reasoning: Cause & Effect MCQs — sample questions

  1. Question 1

    Q1. A number sequence starts with 2, 5, 8, 11. What is the next number in the sequence?

    • A) 14
    • B) 15
    • C) 12
    • D) 13

    Answer: 14

    Explanation: The sequence follows a pattern of adding 3 to the previous term, making 14 the next number

  2. Question 2

    Q2. Identify the next letter in the series: A, C, E, G, ?

    • A) I
    • B) H
    • C) J
    • D) K

    Answer: I

    Explanation: The series consists of consecutive odd letters in the alphabet, making 'I' the next letter

  3. Question 3

    Q3. A series is given as: 1, 2, 4, 8, ?. What comes next?

    • A) 16
    • B) 12
    • C) 10
    • D) 14

    Answer: 16

    Explanation: The series is obtained by doubling the previous term, making 16 the next number

  4. Question 4

    Q4. The sequence of numbers is: 3, 6, 9, 12, ?. What is the next number?

    • A) 15
    • B) 16
    • C) 14
    • D) 18

    Answer: 15

    Explanation: The pattern involves adding 3 to the previous number, making 15 the next number

  5. Question 5

    Q5. What comes next in the series: 2, 4, 8, 16, ?

    • A) 32
    • B) 20
    • C) 24
    • D) 18

    Answer: 32

    Explanation: The series involves doubling the previous term, making 32 the next number

  6. Question 6

    Q6. In a certain code, letters are shifted by 2 places forward. 'CAT' becomes 'ECV'. What will 'DOG' become?

    • A) FQG
    • B) FQH
    • C) EQG
    • D) FRH

    Answer: FQG

    Explanation: Shifting each letter of 'DOG' by 2 places forward results in 'FQG'

  7. Question 7

    Q7. A pattern is observed as: 1, 3, 6, 10, ?. Identify the next number.

    • A) 15
    • B) 12
    • C) 14
    • D) 16

    Answer: 15

    Explanation: The pattern represents triangular numbers, where each term increases by consecutive integers, making 15 the next number

  8. Question 8

    Q8. The sequence given is: 4, 9, 16, 25, ?. What comes next?

    • A) 36
    • B) 30
    • C) 35
    • D) 32

    Answer: 36

    Explanation: The sequence consists of squares of consecutive integers starting from 2, making 36 the next number

  9. Question 9

    Q9. In a series: 1, 4, 9, 16, ?, what is the missing number?

    • A) 25
    • B) 20
    • C) 22
    • D) 24

    Answer: 25

    Explanation: The series is made of squares of consecutive integers, making 25 the next number

  10. Question 10

    Q10. A series of numbers is: 2, 6, 12, 20, ?. What comes next?

    • A) 30
    • B) 28
    • C) 32
    • D) 25

    Answer: 30

    Explanation: The pattern involves adding 4, 6, 8, and so on, to the previous term, making 30 the next number

  11. Question 11

    Q11. The next number in the sequence 1, 2, 4, 7, 11 is?

    • A) 16
    • B) 15
    • C) 14
    • D) 18

    Answer: 16

    Explanation: The sequence is formed by adding 1, 2, 3, 4, and so on, to the previous term, making 16 the next number

  12. Question 12

    Q12. What is the next letter in the series: Z, X, V, T, ?

    • A) R
    • B) S
    • C) Q
    • D) P

    Answer: R

    Explanation: The series involves moving backwards in the alphabet by 2 letters each time, making 'R' the next letter

  13. Question 13

    Q13. In the sequence: 3, 5, 7, 9, ?, what comes next?

    • A) 11
    • B) 10
    • C) 12
    • D) 13

    Answer: 11

    Explanation: The pattern involves adding 2 to the previous number, making 11 the next number

  14. Question 14

    Q14. A number pattern is given as: 2, 3, 5, 7, ?. Identify the next number.

    • A) 11
    • B) 9
    • C) 8
    • D) 10

    Answer: 11

    Explanation: The sequence consists of prime numbers, making 11 the next number. USAT, HAT and MDCAT analytical sections repeat this pattern.

  15. Question 15

    Q15. The series is: 5, 10, 15, 20, ?. What is the next number?

    • A) 25
    • B) 22
    • C) 24
    • D) 26

    Answer: 25

    Explanation: The pattern involves adding 5 to the previous number, making 25 the next number

  16. Question 16

    Q16. What comes next in the letter series: F, L, Q, ?

    • A) U
    • B) T
    • C) V
    • D) S

    Answer: V

    Explanation: The series involves moving forward in the alphabet by 6, then 5, then 6 again (if considering a pattern or sequence of letters based on their position in the alphabet), but upon closer inspection, it seems to be an increment of 6 letters: F(6) to L(12) is +6.

  17. Question 17

    Q17. The sequence is given by: 1, 8, 27, 64, ?. What is the next number?

    • A) 125
    • B) 100
    • C) 120
    • D) 121

    Answer: 125

    Explanation: The sequence consists of cubes of consecutive integers, making 125 the next number

  18. Question 18

    Q18. In the series: O, T, T, F, F, S, S, E, ?, what comes next?

    • A) N
    • B) T
    • C) E
    • D) V

    Answer: N

    Explanation: The series represents the first letter of the numbers One, Two, Three, Four, Five, Six, Seven, Eight, Nine, making 'N' the next letter

  19. Question 19

    Q19. The pattern is: 1, 1, 2, 3, 5, 8, ?. What is the next number?

    • A) 13
    • B) 12
    • C) 11
    • D) 15

    Answer: 13

    Explanation: The sequence is a Fibonacci sequence where each number is the sum of the two preceding ones, making 13 the next number

  20. Question 20

    Q20. What comes next in the series: 4, 16, 36, 64, ?

    • A) 100
    • B) 81
    • C) 121
    • D) 144

    Answer: 100

    Explanation: The sequence consists of squares of even numbers (2^2, 4^2, 6^2, 8^2), making 100 (10^2) the next number

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