The number of 6-digit even numbers that can be made from the number 214635 are:

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The number of 6-digit even numbers that can be made from the number 214635 are:  a) 18 b) 72  c) 120 d) 360 Answer:  D from the question we can see we have to form 6 digit number(no repetition) so, let us six blanks as show below : _ _ _ _ _ _  if the number has to be even it has to be end with even number. 214635   from the above digits even numbers are 2,4,6 so, the units digit is 2 or 4 or 6 so, the no.of.ways is 3 remaining 5 digits can be filled with 5! ways  so, the answer is 5!x3 ways                             = 360 ways  remaini
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If the sum of 4 times a number A and three times a number B is equal to the sum of number B and seven times the number A, then what is the value of A:B? | CTS previous Aptitude question

 If the sum of 4 times a number A and three times a number B is equal to the sum of

number B and seven times the number A, then what is the value of A:B? ( CTS Aptitude question)

Options: 

a) 2:3

b) 3:2

c) 4:3

d) 3:4



If the sum of 4 times a number A and three times a number B is equal to the sum of number B and seven times the number A, then what is the value of A:B? | CTS previous Aptitude question


Answer : A

The above question can be written in below form 

4A + 3B = B + 7A

4A - 7B = B - 3B

-3A  = -2B

hence the answer is A:B = 2:3 



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