Logical Reasoning MCQs

Reasoning

Logical Reasoning MCQs

Solve Logical Reasoning MCQs with detailed explanations for JKSSB, SSC, Railway, Banking, UPSC and all competitive exams.

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Question #101
What day of the week was 15 August 1947?
A. Friday
B. Saturday
C. Thursday
D. Sunday

Correct Answer: Option A


Explanation:
15 August 1947 is historically recorded as Friday.

This question belongs to: Reasoning Logical Reasoning
Question #102
If 1 January 2023 was Sunday, what day of the week was 31 December 2023?
A. Tuesday
B. Monday
C. Sunday
D. Saturday

Correct Answer: Option C


Explanation:
2023 is not a leap year. 364 days between Jan 1 and Dec 31 is exactly 52 weeks, so the day remains Sunday.

This question belongs to: Reasoning Logical Reasoning
Question #103
If 15 August 2023 is Tuesday, what day was 15 August 2019?
A. Wednesday
B. Saturday
C. Thursday
D. Friday

Correct Answer: Option C


Explanation:
From 2019 to 2023 there are 1461 days = 208 weeks + 5 days. So 2019 day + 5 = Tuesday; hence 2019 day was Thursday.

This question belongs to: Reasoning Logical Reasoning
Question #104
If 1 January 2024 is Monday, what day is 1 July 2024?
A. Tuesday
B. Monday
C. Sunday
D. Wednesday

Correct Answer: Option B


Explanation:
From Jan 1 to July 1 in leap year 2024: 31+29+31+30+31+30=182 days = 26 weeks. So same day, Monday.

This question belongs to: Reasoning Logical Reasoning
Question #105
What is the angle between the hands of a clock at 4:30?
A. 60°
B. 40°
C. 45°
D. 30°

Correct Answer: Option C


Explanation:
Minute hand at 180°. Hour hand at 4×30+30×0.5=135°. Difference = 45°.

This question belongs to: Reasoning Logical Reasoning
Question #106
What is the smaller angle between the hands of a clock at 9:15?
A. 172.5°
B. 175°
C. 180°
D. 170°

Correct Answer: Option A


Explanation:
Minute hand at 90°. Hour hand at 9×30+15×0.5=277.5°. Difference = 187.5°; smaller angle = 360−187.5=172.5°.

This question belongs to: Reasoning Logical Reasoning
Question #107
At what time between 2 and 3 o'clock will the hands of a clock coincide?
A. 2:10
B. 2:11 10/11
C. 2:12
D. 2:10 10/11

Correct Answer: Option D


Explanation:
For H=2, time = (60×H)/11 = 120/11 = 10 10/11 minutes past 2.

This question belongs to: Reasoning Logical Reasoning
Question #108
At what time between 4 and 5 o'clock will the hands of a clock be at right angles for the first time?
A. 4:8 1/11
B. 4:38 2/11
C. 4:20
D. 4:5 5/11

Correct Answer: Option D


Explanation:
At 4:00, hour hand is at 120°. For right angle, minute hand must gain 30°. Gain = 30/5.5 = 60/11 = 5 5/11 minutes.

This question belongs to: Reasoning Logical Reasoning
Question #109
A clock loses 5 minutes every hour. It is set right at 12 noon. What will be the true time when the clock shows 8 p.m.?
A. 8:45 p.m.
B. 8:35 p.m.
C. 8:30 p.m.
D. 8:40 p.m.

Correct Answer: Option D


Explanation:
In 8 clock hours the clock loses 8×5 = 40 minutes. True time = 8:00 + 40 min = 8:40 p.m.

This question belongs to: Reasoning Logical Reasoning
Question #110
In a class of 50 students, 30 play cricket, 20 play football, and 10 play both. How many play neither?
A. 5
B. 20
C. 10
D. 15

Correct Answer: Option C


Explanation:
Total who play at least one = 30+20−10 = 40. Neither = 50−40 = 10.

This question belongs to: Reasoning Logical Reasoning
Question #111
In a group of 100 persons, 60 read English, 50 read Hindi, and 20 read both. How many read neither?
A. 30
B. 10
C. 40
D. 20

Correct Answer: Option B


Explanation:
At least one = 60+50−20=90. Neither = 100−90=10.

This question belongs to: Reasoning Logical Reasoning
Question #112
70% people like coffee, 60% like tea, and 40% like both. What percentage likes neither?
A. 20%
B. 40%
C. 30%
D. 10%

Correct Answer: Option D


Explanation:
At least one = 70+60−40=90%. Neither = 10%.

This question belongs to: Reasoning Logical Reasoning
Question #113
In a class of 80 students, 45 study Maths, 40 study Physics, and 15 study both. How many study exactly one subject?
A. 50
B. 60
C. 65
D. 55

Correct Answer: Option D


Explanation:
Only Maths = 45−15=30; only Physics = 40−15=25. Exactly one = 30+25=55.

This question belongs to: Reasoning Logical Reasoning
Question #114
In a survey, 50 people like tea, 40 like coffee, and 30 like both. How many like only tea?
A. 20
B. 30
C. 40
D. 10

Correct Answer: Option A


Explanation:
Only tea = 50−30 = 20.

This question belongs to: Reasoning Logical Reasoning
Question #115
Statement: All successful people are disciplined. Ravi is disciplined. Conclusion: Ravi is successful.
A. Conclusion is definitely false
B. Data inadequate
C. Conclusion does not follow
D. Conclusion follows

Correct Answer: Option C


Explanation:
The statement is All S are D. From D(Ravi), we cannot conclude S(Ravi); this is the fallacy of the converse.

This question belongs to: Reasoning Logical Reasoning
Question #116
Statement: All mangoes are fruits. Some fruits are sweet. Conclusion: Some mangoes are sweet.
A. Conclusion follows
B. All mangoes are sweet
C. Conclusion is definitely false
D. Conclusion does not follow

Correct Answer: Option D


Explanation:
Mangoes are fruits, but not necessarily among the fruits that are sweet. The conclusion is not certain.

This question belongs to: Reasoning Logical Reasoning
Question #117
Statement: If it rains, the match will be cancelled. It rained. Conclusion: The match was cancelled.
A. Conclusion follows
B. Conclusion is false
C. Cannot be determined
D. Conclusion does not follow

Correct Answer: Option A


Explanation:
This is modus ponens: If P then Q; P is true, therefore Q is true.

This question belongs to: Reasoning Logical Reasoning
Question #118
Statement: If it rains, the match will be cancelled. The match was cancelled. Conclusion: It rained.
A. Conclusion does not follow
B. Conclusion is false
C. It definitely rained
D. Conclusion follows

Correct Answer: Option A


Explanation:
This is the fallacy of affirming the consequent. The match could be cancelled for other reasons.

This question belongs to: Reasoning Logical Reasoning
Question #119
Statement: Either A or B will attend the meeting. A did not attend. Conclusion: B attended.
A. Cannot be determined
B. Conclusion is false
C. Conclusion follows
D. Conclusion does not follow

Correct Answer: Option C


Explanation:
This is a valid disjunctive syllogism: Either A or B; not A; therefore B.

This question belongs to: Reasoning Logical Reasoning
Question #120
Statement: Unless you work hard, you will fail. Conclusion: If you did not fail, you worked hard.
A. Cannot be determined
B. Conclusion does not follow
C. Conclusion is false
D. Conclusion follows

Correct Answer: Option D


Explanation:
'Unless P, Q' means 'If not P, then Q'. Its contrapositive is 'If not Q, then P'. Hence, if you did not fail, you worked hard.

This question belongs to: Reasoning Logical Reasoning