WBCS.LIVE practice question

How many 9 are sandwiched between 6 and 7 in 69699667697966977966?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 2
  2. 3
  3. 4
  4. 5

Correct answer and explanation

Correct answer: 4

Explanation: āœ… Correct Answer: C) 4 šŸ“š Explanation: "Sandwiched between 6 and 7" means we must look for the specific sequences "697" or "796" within the string. Carefully tracing the numbers: ...67 697 (first) 96 697 (second) 796 (third) 66... Wait, let's trace the exact string: 6 9 6 9 9 6 6 7 6 9 7 (1st: 697) 9 6 (2nd: 796) 6 9 7 (3rd: 697) 7 9 6 (4th: 796) 6. There are exactly 4 instances of these combinations.