yx - xy = x0y - yx
= (10y + x) - (10x + y) = (100x + y) - (10y + x)
9y - 9x = 99x - 9y
18y = 108x
y=6x
Since, x comes in hundreds place, we know it can only be 1 as the difference
between the 3 digit number and two digit number is difference of two 2 digit
numbers only.
thus, y=6*1 = 6
a
A car is traveling at a uniform speed.The driver sees a milestone
showing a 2-digit number. After traveling for an hour the driver sees
another milestone with the same digits in reverse order.After another
hour the driver sees another milestone containing the same two digits.
What is the average
http://www.geekinterview.com/question_details/56715
I think you missed zero :)
On Thu, Jul 14, 2011 at 12:20 AM, shiv narayan
narayan.shiv...@gmail.com wrote:
A car is traveling at a uniform speed.The driver sees a milestone
showing a 2-digit number. After traveling for an hour the driver sees
Ans should be 45km/hr. :)
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UDIT
DU- MCA
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initially he saw say xy then he saw yx now what next does he
see...containing only x and y??
Please clarify your question..
On Thu, Jul 14, 2011 at 12:59 AM, udit sharma sharmaudit...@gmail.comwrote:
Ans should be 45km/hr. :)
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UDIT
DU- MCA
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1st: xy
2nd: yx
3rd: x0y
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Relation comes out as : y=6x
so x=1 ans y=6.
so 1st: 16 (say km)
2nd: 61
3rd: 106
av. speed=(106-16)/2=45 km/hr
On Thu, Jul 14, 2011 at 1:13 AM, Siddharth kumar
siddhartha.baran...@gmail.com wrote:
1st: xy
2nd: yx
3rd: x0y
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