1
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is C(n, 1) + C(n, 2) + _ _ _ _  _ + C(n, n) equal to
A
2 + 22 + 23 + _ _ _ _ _  + 2n
B
1 + 2 + 22 + 2+ _ _ _ _ _ + 2n
C
1 + 2 + 22 + 23 + _ _ _ _ _ _ + 2n - 1
D
2 + 22 + 23 + _ _ _ _ _ + 2n - 1
2
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
How many 5-digit prime numbers can be formed using the digits 1, 2, 3, 4, 5 if the repetition of digits is not allowed?
A
5
B
4
C
3
D
0
3
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
In how many ways can a team of 5 players be selected from 8 players so as not to include a particular player?
A
42
B
35
C
21
D
20
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