1.

The Difference in the digits of a two digit number is 1. If the digits are interchanged the new no. becomes 9 more than the old no. Find the no.​

Answer»

Answer:

  1. 45

Step-by-step EXPLANATION:

let the UNIT place BA X and 10 + b y the number is 10 y + X is the condition X + y EQUAL 9 equation first the number interchange the unit place and tens place we X the new number is form 10 X + y according to QUESTION 10 X + y equal 10 y + X + 9 10 x minus x + y - 3 y equal 9 9 x minus 9 y equal equal 9 (x-y)=9

x minus y equal one equation first


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