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How many 4 digit numbers are there, if it is known that the first digit is even, the second is odd, the third is prime, the fourth (units digit) is divisible by 3, and the digit…
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How many 4 digit numbers are there, if it is known that the first digit is even, the second is odd, the third is prime, the fourth (units digit) is divisible by 3, and the digit…
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Aug 4, 2019
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How many 4 digit numbers are there, if it is known that the first digit is even, the second is odd, the third is prime, the fourth (units digit) is divisible by 3, and the digit 2 can be used only once?
Mathematics
high-school
Razem
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4*5*3*4+3*5*4*4=240+240=480
Indrajeet Singh
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Aug 11, 2019
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Indrajeet Singh
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