Question

A two number becomes five-sixth of itself when its digits are reversed the two digits differ by 1 the number is
a)45
b)54
c)56
d)65

Answer 1

Ans a

There is no working but elimination method :-

Let us take option 1

No = 45
When reversed it becames 54
54*5/6 = 45 condition 1 satisfied

Now at condition difference is one
5-4 = 1

Hence both condition satisfied ...

Try to eliminate the other option you will get ans automatically .