An expert is a man who has made all the mistakes, which can be made, in a very narrow field.
Niels BohrThe difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?
frankM4Math helped me a lot.
Vipul Chavan 4 years agoThanks m4 maths for helping to get placed in several companies.
I must recommend this website for placement preparations.
