Sainik School Entrance Exam 2020 Solved Paper

Question : 38 of 150

Marks: +1, -0

The sum of the digits of a two digit number is 9 . If 27 is subtracted from the number then the digits get reversed. Find the number.

Solution:

(d) By options
(a)

81 ⇒8+1=9,81-27=54

(b)

72 ⇒7+2=9,72-27=45

(c)

36 ⇒3+6=9,36-27=9

(d)

63 ⇒6+3=9,63-27=36

Hence, the number

=63

The sun of digits

=6+3=9

and,

63-27=36

36

is reverse of

63

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