- A9
- B18
- C8
- D10
Step-by-Step Solution
They are 11, 22, 33, 44, 55, 66, 77, 88, 99 - one for each digit 1 to 9, so 9 numbers.
Answer: A) 9
The numbers 11, 22, 33, ... up to 99 are 'repdigit' numbers (both digits the same).
Kavya writes all such two-digit numbers in a list.
How many such two-digit numbers are there?
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