The sum of the digits of a two-digit number is 10. If 18 is subtracted from it, the digits are reversed. Find the number.
A64
B73
C82
D91
Explanation
7+3=10. 73-18=55? No, digits reversed: 73-18=55. Wait, 82-18=64. 91-18=73. Let’s try 73. 73-18=55. Let’s try 64. 64-18=46 (reversed). 6+4=10. Number is 64.
Exam Relevance
- Topic: Number System
- Subtopic: Digit Problems
No Comments