1
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A polygon of n sides has 105 diagonals, then n is equal to

A
20
B
21
C
15
D
$$-$$14
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

How many factors of $$2^5 \times 3^6 \times 5^2$$ are perfect squares?

A
16
B
24
C
12
D
22
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

A candidate is required to answer 7 questions out of 12 questions which are divided into two groups each containing 6 questions. He is not permitted to attempt more than 5 questions from either group. The number of ways in which he can choose the 7 question is

A
1272
B
780
C
640
D
820
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a 12 storey house, 10 people enter a lift cabin. It is known that they will leave the lift in pre-decided groups of 2, 3 & 5 people at different storeys. The number of ways they can do so if the lift does not stop up to the second storey is

A
120
B
78
C
132
D
720
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