1
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
In how many ways can the letters of the word DELHI be arranged, keeping the positions of vowels and consonants unchanged?
A
6
B
9
C
12
D
14
2
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
What is the number of positive integer solutions of ?
A
3
B
5
C
6
D
9
3
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
If the number of selections of r as well as things from 5n different things are equal, then what is the value of r?
A
n
B
2n
C
3n
D
4n
4
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
What is the number of selections of at most 3 things from 6 different things?
A
20
B
22
C
41
D
42
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