Mathematics · Permutations and Counting
Chandra is a confused typist. While typing numbers from 600 to 799 (both inclusive), he typed the digit '8' wherever he was supposed to type the digit '6'. What is the total number of times he actually typed the digit '8'?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1320
- 2300
- 3230
- 4180✓
Correct answer
180
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