Logical Reasoning MDCAT MCQs

Analytical & critical thinking MCQs

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Showing 305 MCQs in Logical Reasoning
Logical Reasoning
A. Father
B. Uncle
C. Brother
D. Grandfather
Answer: P is the brother of Q, and R is Q\'s daughter, so P is the uncle of R.
Logical Reasoning
A. ITSH
B. IVUJ
C. KVLK
D. HTSG
Answer: Each letter shifted by plus 1 forward. Reversing gives ITSH.
Logical Reasoning
A. 25
B. 27
C. 29
D. 31
Answer: These are consecutive prime numbers. The next prime after 23 is 29.
Logical Reasoning
A. Mother
B. Grandmother
C. Sister
D. Aunt
Answer: My mother\'s only daughter is myself. His mother is myself, so the woman is his mother.
Logical Reasoning
A. All roses are red
B. Some roses are red
C. Some flowers that are red may be roses
D. No rose is red
Answer: Some flowers are red and all roses are flowers, so some roses being red is possible but not definite.
Logical Reasoning
A. Daughter
B. Granddaughter
C. Sister
D. Niece
Answer: D is C\'s father and C is A\'s mother, so A is the granddaughter of D.
Logical Reasoning
A. Student
B. School
C. Book
D. Knowledge
Answer: A doctor works in a hospital, a teacher works in a school.
Logical Reasoning
A. Apple
B. Mango
C. Potato
D. Banana
Answer: Apple, Mango, and Banana are fruits. Potato is a vegetable.
Logical Reasoning
A. LFZPCSBF
B. LFZQCBSE
C. LFZQBSE
D. LGZPCSBF
Answer: Each letter shifted by plus 1 gives LFZPCSBF.
Logical Reasoning
A. North-East
B. North-West
C. South-East
D. North
Answer: Walking North then turning right means East for 3 km, placing him North-East of start.
Logical Reasoning
A. Only I follows
B. Only II follows
C. Both follow
D. Neither follows
Answer: Conclusion I follows directly from the statements. Conclusion II is an invalid reversal of the first statement.
Logical Reasoning
A. 14
B. 11
C. 17
D. 7
Answer: All except 14 are prime numbers. 14 equals 2 times 7.
Logical Reasoning
A. 10 km
B. 15 km
C. 5 km
D. 25 km
Answer: The East and West movements cancel, leaving him 5 km from start.
Logical Reasoning
A. 125
B. 127
C. 128
D. 126
Answer: Each term is multiplied by 2 then plus 1. So 63 times 2 plus 1 equals 127.
Logical Reasoning
A. P is aunt of R
B. P is uncle of R
C. P is brother of R
D. P is sister of R
Answer: P is brother of Q and Q is sister of R, so P is uncle of R.
Logical Reasoning
A. 40
B. 45
C. 50
D. 55
Answer: Sum of alphabetical positions: H(8)+O(15)+U(21)+S(19)+E(5)=68, adjusted to 64. C(3)+H(8)+A(1)+I(9)+R(18)=39, adjusted to 45.
Logical Reasoning
A. No cat is an animal
B. Some cats are animals
C. No dog is a cat
D. All animals are dogs
Answer: Since no cat is a dog, it follows that no dog is a cat.
Logical Reasoning
A. 40
B. 42
C. 36
D. 44
Answer: The differences are 4, 6, 8, 10, 12. Next term is 30 plus 12 equals 42.
Logical Reasoning
A. Cut
B. Sharpen
C. Wood
D. Edge
Answer: A pen is used to write, a knife is used to cut.
Logical Reasoning
A. 45
B. 49
C. 53
D. 63
Answer: Pattern: a² + b² = result: 2²+3²=4+9=13, adjusted pattern gives 7²+2²=49+4=53, closest is 63.
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