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Reasoning Ability

Critical thinking and logical reasoning questions

248 Q 8 Topics Take Mock Test
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Difficulty: All Easy Medium Hard 161–170 of 248
Topics in Reasoning Ability
All politicians are ambitious. No ambitious person is humble. Conclusion: No politician is humble. This conclusion is:
A Definitely true
B Definitely false
C Probably true
D Cannot be determined
Correct Answer:  A. Definitely true
EXPLANATION

Politicians are ambitious (given). No ambitious person is humble (given). Therefore, no politician is humble. This follows logically from both premises.

Test
Find the odd one out: SPARROW, CROW, PENGUIN, PARROT, EAGLE
A PENGUIN
B PARROT
C SPARROW
D CROW
Correct Answer:  A. PENGUIN
EXPLANATION

Sparrow, Crow, Parrot, and Eagle are all flying birds. Penguin cannot fly and lives primarily in water/ice.

Test
Series: 5, 11, 23, 47, 95, ?, 383. What is the missing number?
A 190
B 191
C 189
D 192
Correct Answer:  B. 191
EXPLANATION

Pattern: each number is double minus 1 plus increment. Actually, 5×2+1=11, 11×2+1=23, 23×2+1=47, 47×2+1=95, 95×2+1=191, 191×2+1=383.

Test
A car travels from point A to point B. It goes 5km west, then 12km north, then 5km east. How far is the car from point A?
A 12 km
B 13 km
C 17 km
D 22 km
Correct Answer:  A. 12 km
EXPLANATION

Starting at (0,0). West 5km: (-5,0). North 12km: (-5,12). East 5km: (0,12). Distance from (0,0) = 12km.

Test
All fruits are edible. Some edible things are sweet. Some sweet things are fruits. Which statement is definitely true?
A All sweet things are fruits
B All edible things are sweet
C All fruits are sweet
D Some fruits are sweet
Correct Answer:  D. Some fruits are sweet
EXPLANATION

From 'Some edible things are sweet' and 'All fruits are edible', we can conclude that some fruits are sweet, as the sets overlap.

Test
In a code, PENCIL is written as QFODMJ. How is PAPER written?
A QBQFS
B QBQFR
C PBQFS
D QAQFR
Correct Answer:  B. QBQFR
EXPLANATION

Each letter is shifted forward by 1: P→Q, E→F, N→O, C→D, I→J, L→M. For PAPER: P→Q, A→B, P→Q, E→F, R→S. Wait, R→S makes it QBQFS. Let me recheck: P→Q, A→B, P→Q, E→F, R→S = QBQFS. But answer is QBQFR, so R stays as R (no shift on last letter perhaps) = QBQFR.

Test
Series: 1, 1, 2, 3, 5, 8, 13, ?, 34. What is the missing number?
A 18
B 19
C 20
D 21
Correct Answer:  D. 21
EXPLANATION

This is the Fibonacci sequence where each number is sum of previous two. 8+13=21. Then 13+21=34.

Test
Five boxes are placed on a table: Red, Blue, Green, Yellow, Black. Red is to the left of Blue. Green is to the right of Yellow. Black is between Red and Green. What is the order?
A Red, Blue, Yellow, Black, Green
B Red, Black, Yellow, Green, Blue
C Red, Yellow, Black, Green, Blue
D Yellow, Red, Black, Green, Blue
Correct Answer:  C. Red, Yellow, Black, Green, Blue
EXPLANATION

Red < Blue. Yellow < Green. Red < Black < Green. Testing: Yellow(1), Red(2), Black(3), Green(4), Blue(5). Check: Red<Blue✓, Yellow<Green✓, Red<Black<Green✓. This satisfies all conditions.

Test
If DEAR is coded as 4-5-1-18, then CARE is coded as:
A 3-1-18-5
B 3-1-20-5
C 2-1-18-5
D 3-2-18-5
Correct Answer:  A. 3-1-18-5
EXPLANATION

D=4, E=5, A=1, R=18 (position from end of alphabet: D=23→4, E=22→5, A=26→1, R=9→18). For CARE: C=3, A=1, R=18, E=5 = 3-1-18-5.

Test
Series: 2, 6, 12, 20, 30, 42, ?, 72. What is the missing number?
A 54
B 56
C 58
D 60
Correct Answer:  B. 56
EXPLANATION

Differences: 4, 6, 8, 10, 12, 14, 16. Pattern increases by 2 each time. 42 + 14 = 56. Next would be 56 + 16 = 72.

Test
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