How many 5 digits numbers can be formed using 1,2,3,4,5,6 which is divisible by 4 and repetition is not allowed.
1.96
2.144
3.192
4.216
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12,16,24,32,36,52,56,64
last 2 places can be filled in 8 ways
remaining three places can be filled in 4*3*2 = 24 ways
total no. formed = 8*24 = 192
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last digit can be filled only by 3 number (2,4,6),second digit can be filled only by 2 (2,4,6) because one number is used in place of last digit . third place can be filled by 4 digit place and2 by3 number and 1 by 2 number . number which is divisible by 4 the last 2 digit should be divisible by 4
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