How many 5 - digit numbers divisible by 4 can be formed using the digits 5,
6, 7, 8, and 9 such that there is no repetition of digits?
A)
30
B)
21
C)
24
D)
18
Answers
Answered by
8
Answer:
important number is only last two digit to find ita divide by 4
you note only even number
- first check if last digit is 6
- second check last digit 8
56,76 two numbers is divided by 4 so first 3 digit arrangement = 3!×2 =12
68 is only number which divide by 4 =3!×1 =6
total number =12+6 =18
Answer = D) 18
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