Latest Others Aptitude Question SOLUTION: How many 5 digit no. can b formed wit digits 1, 2, 3,4,5,6 which r divisible by 4 and digits not repeated. please tell steps

• Placement Papers
• /
• Others

Others Question Papers:

(#M40000374) OTHERS question maths puzzle Keep an EYE

How many 5 digit no. can b formed wit digits 1, 2, 3,4,5,6 which r divisible by 4 and digits not repeated.
please tell steps

Asked In Others Naveen (14 years ago)

Solved C.T.Narayanan Read Solution (2)

Is this Puzzle helpful?   (35)   (6) Submit Your Solution

Read Solution (2) :

C.T.Narayanan  (14 years ago) Best Solution

192

last 2 digits are 12,16,24,32,36,52,56,64 = 8 ways

reamining 3 digits in 4*3*2 ways

total = 4**3*2*8 = 192 ways

Is this solution Helpfull? Yes (19) | No (6)  

Kavita kumari  (8 years ago)

Well here is the solution:-Take 5 blanks _ _ _ _ _.
Since the number has to be divisible by 4 we can have only the following cases
12,16,24,32,36,52,56,64.That is you can fill the last two blanks in eight ways.
Now take the first three blanks.Since we already selected 2 numbers,we are left with 4 numbers.
That is we can fill the first blank in 4 ways,similarly the second in 3,the third in 2 ways.
By fundamental principle of counting we have to multiply all of them.
That is 4 x 3 x 2 x 8=192.

Is this solution Helpfull? Yes (2) | No (1)  

Please Login to Read Solution.