Question

which one of the following 2 digit no. added to 27 get reversed - 1. 27 , 2. 24, 3. 47, 4. 70​

Answer 1

Answer:

3. 47

Step-by-step explanation :

47 + 27 = 74

Reverse of 47 = 74

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Answer 2

SOLUTION :

Consider a number with units digit 'y' and tens digit 'x'

So , no. = 10x+y

Given , 10x+y+27=10y+x

9y-9x=27

y-x=3

So , all those two digit nos. whose units digit is greater than the tens digit by 3 will get reversed when 27 is added to them

Eg: 14+27=41

25+27=52

36+27=63

47+27=74

58+27=85

69+27=96

That's all!