2009 · Q76
A number consists of two digits, whose sum is 10. If 18 is subtracted from the number, digits of the number are reversed. What is the product?
Elementary MathematicsAlgebra
- A15
- B18
- C24
- D32
Explanation
a−b=2, a+b=10 gives 64; product 24.
A number consists of two digits, whose sum is 10. If 18 is subtracted from the number, digits of the number are reversed. What is the product?
Explanation
a−b=2, a+b=10 gives 64; product 24.