1
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
2
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
How many 4-digit numbers are there having all digits as odd? 
1
625
2
400
3
196
4
120
3
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
In how many ways can the letters of the word INDIA be permutated such that in each combination, vowels should occupy odd positions?
1
3
2
6
3
9
4
12
4
NDA Mathematics 1st September 2024
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
The letters of the word EQUATION are arranged in such a way that all vowels as well as consonants are together. How many such arrangements are there?
1
240
2
720
3
1440
4
1620
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