AMU MCA Logical Ability And Logical Reasoning Previous Year Questions (PYQs) – Page 1 of 6
A Place for Latest Exam wise Questions, Videos, Previous Year Papers,
Study Stuff for MCA Examinations
Study Stuff for MCA Examinations
Showing 57 questions
LOGIC: BHFNK :: CLERK : ?
1
2
3
4
Solution
Pattern: Each letter is moved +2, +2, +2, +2, +2 alphabetically.
CLERK →
C → E
L → N
E → G
R → T
K → M
Statements:
A. All terrorists are guilty.
B. All terrorists are criminals.
Conclusions:
I. Either all criminals are guilty or all guilty are criminals.
II. Some guilty persons are criminals.
III. Generally criminals are guilty.
IV. Crime and guilt go together.
1
2
3
4
Solution
From statements: Terrorists ⊆ Guilty and Terrorists ⊆ Criminals.
There must be some guilty persons who are criminals.
Conclusion II follows.
Other conclusions are either vague or not definite.
If P denotes +, Q denotes −, R denotes × and S denotes ÷, which of the following statements is correct?
1
2
3
4
Solution
$8×8 + 8÷8 − 8 = 64 + 1 − 8 = 57$
X is 5th from right end and Y is 15th from left end. If they interchange their places, Y becomes 24th from left end. Then what is the number of students?
1
2
3
4
Solution
After interchange, Y is 24th from left.
Original position of X = 24
Total students
$= 24 + 5 − 1 = 28$
At the time of marriage a man was 6 years older than his wife but 12 years after the marriage he was $\frac{6}{5}$ times the age of his wife. What were their ages in years at the time of marriage?
1
2
3
4
Solution
Let wife’s age at marriage = $x$
Man’s age = $x + 6$
After 12 years:
$\frac{x + 18}{x + 12} = \frac{6}{5}$
$5x + 90 = 6x + 72$
$x = 18$
Man’s age = $24$
Statements:
A. Some books are pens.
B. No pen is pencil.
Conclusions:
I. Some pens are books.
II. Some pencils are books.
III. Some books are not pencils.
IV. All pencils are books.
1
2
3
4
Solution
From statement A → I follows.
From statement B → books (which are pens) cannot be pencils → III follows.
If ‘A $ B’ means ‘A is the father of B’, ‘A * B’ means ‘A is the mother of B’, ‘A @ B’ means ‘A is the wife of B’, then which of the following means ‘M is the grandmother of N’?
1
2
3
4
Solution
M * T ⇒ M is mother of T
T $ R ⇒ T is father of R
So M is grandmother of R ✅
R @ N ⇒ R is wife of N (female), so N is husband of R
This does not make R parent of N. ❌
Check (d) M * R @ T @ N
M * R ⇒ M is mother of R
R @ T ⇒ R is wife of T (so T is husband of R)
T @ N ⇒ T is wife of N (impossible here: T already husband in previous step) ❌
Check (c) M $ R $ T @ N
M $ R ⇒ M is father of R (male) ❌ (grandmother must be female)
So only valid form is (a): M * T $ N @ R
M * T ⇒ M is mother of T
T $ N ⇒ T is father of N
So M is grandmother of N ✅
(Last part “N @ R” just adds N is wife of R, doesn’t break grandmother relation)
If ‘P F Q’ means ‘P is father of Q’; ‘P M Q’ means ‘P is mother of Q’; ‘P S Q’ means ‘P is sister of Q’, then how is D related to N in ‘N M A F B S D’?
1
2
3
4
Solution
M A → N is mother of A
A F B → A is father of B
B S D → B is sister of D
A man walks 1 km towards East and then he turns to South and walks 5 km. Again he turns to East and walks 2 km, after this he turns to North and walks 9 km. Now, how far is he from his starting point?
1
2
3
4
Solution
Take start as (0,0).
East 1 → (1,0)
South 5 → (1,-5)
East 2 → (3,-5)
North 9 → (3,4)
Distance from start
$= \sqrt{3^2 + 4^2} = 5$ km
Pointing to a gentleman, Deepak said, “His only brother is the father of my daughter’s father.” How is the gentleman related to Deepak?
1
2
3
4
Solution
“My daughter’s father” = Deepak.
So “father of my daughter’s father” = Deepak’s father.
Gentleman’s only brother = father of Deepak = Deepak’s father.
So gentleman is brother of Deepak’s father = Deepak’s uncle.
AMU MCA
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
AMU MCA
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
Ask Your Question or Put Your Review.
