find the number of 4 digited numbers that can be formed using the digits 1,2,5,6,7 . How many of them are divisible by 3
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Step-by-step explanation:
The number of 4 digit numbers that can be formed using the digits 1,2,5,6,7 are 120 (with out repetition)
The number of numbers that are divisible by 3 from the above 120 numbers are 24.
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