Question

किसी संख्या के दो अंको का योगफल 13हैं यदि इस संख्या से 9 घटाया जाए तो अंक परस्पर बदल जाते हैं

Answer 1

Here is your answer DOOD

4 is the right answer

Answer 2

let no be : 10x + y.

Given :

x + y = 13

x = (13 - y)..........(1)

According to Question :

10x + y - 9 = 10y + x.

10(13 - y) + y -9 = 10y + x.

130 - 10y + y -9 = 10y + 13 - y.

10y + 10y - y - y = 130 - 9 - 13.

18y = 108

y = 6.

y = x, in eq........(1).

x = 13 - 6.

x = 7.

so Number will be : 10 × 7 + 6.

=>>>>>76.




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