1
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

If $26! = n8^k$, where $k$ and $n$ are positive integers, then what is the maximum value of $k$?

A

$6$

B

$7$

C

$8$

D

$9$

2
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

How many four-digit natural numbers are there such that all of the digits are even?

A

625

B

500

C

400

D

256

3
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

Four digit numbers are formed by using the digits 1, 2, 3, 5 without repetition of digits. How many of them are divisible by 4?

A

120

B

24

C

12

D

6

4
NDA Mathematics 21 April 2024
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

What is the number of different matrices, each having 4 entries that can be formed using 1, 2, 3, 4 (repetition is allowed)?

A

72

B

216

C

256

D

768

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