Question 25
Different letters represent different digits in the column addition below. Find the value of the four-digit number REEF.
$COR+OR=REEF$.
Interpretation: The first digit of a multi-digit number is nonzero; the same letter always has the same value.
Answer format: enter the integer without units. Leading zeros are optional (the source uses four answer boxes).
$COR+OR=REEF$.
Interpretation: The first digit of a multi-digit number is nonzero; the same letter always has the same value.
Answer format: enter the integer without units. Leading zeros are optional (the source uses four answer boxes).