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Consider the series: 5 P 3 Q R 7 A B 2 9 C K 4 D 6. How many numbers in this series are immediately preceded by a letter and also immediately followed by a letter?

Competition practiceAlphanumeric / Series
  • A3
  • B5
  • C4
  • D2

Step-by-Step Solution

The qualifying numbers are and ; 2 and 9 sit next to each other and 5, 6 are at the ends.
Answer: A) 3

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