1. Two numbers differ by 3 and their product is 504. Find the numbers.
2. A number consists of two digits. Where the number is divided by the sum of its digits, the quotient is 7. If 27 is subtracted
from the number, the digits interchange their places, find the number
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we have
x-y=3
xy=504
there are many methods to solve this
here i have used trial and error method
x=24
y=21
verification
24×21=504
and 24-21=3