How many 4 digits numbers can be formed using 1,2,3,4,5 (without repeting digits) which are devisible by 6??
Mentione the step how you get it..
Answers
Answered by
0
3412,
3512,
3212,
4512,
5312 &
5412.
3512,
3212,
4512,
5312 &
5412.
Answered by
3
A number is divible by 6 if it satisfy the divisblity test of 2 and 3
A number is divisible by 2 if it has even numbrs at unit place
A number is divisible by 3 if the sum of all the digit of the number is divisible by 3.
Thus,it is clear that the must contain 2 and 4 at unit place and its sum must be divisible by 3.
Likewise, you can find your answer
A number is divisible by 2 if it has even numbrs at unit place
A number is divisible by 3 if the sum of all the digit of the number is divisible by 3.
Thus,it is clear that the must contain 2 and 4 at unit place and its sum must be divisible by 3.
Likewise, you can find your answer
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