Question 1

Past Exam Questions 2012 0

Question 1: Positive integer whose tenth digit is 5 more than its unit and sum of digits is 11. The integer is ?

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Solution:

Here we suppose the integer is ‘xy’ !

Then its position digits are mentioned;

Now by given information;

$x=y+5 ----- (1)$

$x+y =11 ----(2)$

Putting value of x in eq (2)

$\Rightarrow y+5+y =11$

$\Rightarrow 2y+5 =11$

$\Rightarrow 2y =6$

$\Rightarrow y =3$

Put this value of y in eq (1)

$\Rightarrow x = 3+5=8$

$\Rightarrow x =8$

So the digit is

Digit = 83

Here 8 is tenth digit which is ‘5’ more than its unit digit 3

Also 8+3=11

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