Question

3. The sum of the digits of a 2 digit number is 7 and the difference between the number and the
number formed by reversing the digits is 27. Find the numbers ​

Answer 1

Answer:

Let the ones's digit =x.

So, sum of the digits =7

Tens's digit =7−x

Original no. =10(7−x)+x=70−10x+x=70−9x

Reversed no. =10x+7−x=9x+7

2(orig no) = reversed no. −2

2(70−9x)=9x+7−2

140−18x=9x+5

27x=135

x=5

Ten's digit =7−5=2

No. =25

Answer 2

Let B be the new number formed by reversing the digits. ... Find the numbers? 7 ... Since difference in our case is 27 and 27/9 = 3, the difference between the two digits should be 3.