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Maths Puzzle
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how many 6 digit even numbers can be formed from the digits 1,2,3,4,5,6,7, so that digits should not repeat and the second last digit is even?
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- 6*5*4*3*3*2 = 2160.
Is this correct ? - 8 years agoHelpfull: Yes(0) No(1)
- 5*4*3*2*3*1 = 360
as the 2nd last digit can have only the even no. so only 2 or 4 or 6 can be placed there so for rest of the places only 5 options are left . - 8 years agoHelpfull: Yes(0) No(1)
- 5*4*3*2*2*3=720
- 8 years agoHelpfull: Yes(0) No(0)
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