Question

how many different odd numbers of 4 digits can be formed with the digits 1,2,3,4,5,6,7 the digit in any number being all different



please explain step by step​

Answer 1

Answer:

And finally the 3rd digit can be one of the 3 remaining digits. So the number of possibilities is 4*4*4*3=192. Since it is an odd digit number, unit place can have 1, 3, 5 or 7.

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Answer 2

Answer:

1234567, 7654321, 2143765, 1735462