The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
Why would we take 10 we can take 15 or other no also ?
Shu said:
(Thu, Jul 21, 2011 05:23:42 PM)
Why have they taken 10 only why not 9 or 4?
Punit Mandelia said:
(Mon, Aug 1, 2011 05:16:48 PM)
Actually it indicates the place, the order of place is hundred tens and unit place. So when we are talking about interchanging digit we are writing in place as we are interchanging there place. Got it.?
Jisha said:
(Wed, Aug 3, 2011 12:44:33 PM)
Please explain properly step by step.
Meghna Jain said:
(Fri, Sep 16, 2011 02:26:26 PM)
Please explain in simple form.
Aravind said:
(Sat, Jan 14, 2012 10:20:54 AM)
Actually here we taken as 2 digit number.
i.e, 10*digit1 + digit2 = two-digit number.
inter changing.i.e, digit2*10 + digit1 = two-digit number.
difference b/w two-digit number & after inter changing that two-digit number is equal to 36.
say digit1=x,digit2=y,
then, (10x+y)-(10y+x)=36,
9(x - y) = 36