πŸ“Š Math
Q. A young girl counted in the following way on the fingers of her left hand. She started calling the thumb 1, the index finger 2, middle finger 3, ring finger 4, little finger 5, then reversed direction, calling the ring finger 6, middle finger 7, index finger 8, thumb 9 and then back to the index finger for 10, middle finger for 11 and so on. She counted up 1994. She ended on her
  • (A) Thumb
  • (B) Index finger
  • (C) Middle finger
  • (D) Ring finger
βœ… Correct Answer: (C) Middle finger

Explanation: If the girl counts the way as given in the question,
The counting serial for thumb will be 1, 9, 17, 25 . . . . . .
Hence,
Number 1992 ( as 1992 is divisible by 8, common difference of series formed by counting) will also fall on thumb.
Hence,
Number 1994 will end on her middle finger.

Explanation by: Mahesh Chandra
If the girl counts the way as given in the question,
The counting serial for thumb will be 1, 9, 17, 25 . . . . . .
Hence,
Number 1992 ( as 1992 is divisible by 8, common difference of series formed by counting) will also fall on thumb.
Hence,
Number 1994 will end on her middle finger.

πŸ’¬ Discussion


πŸ“Š Question Analytics

πŸ‘οΈ
880
Total Visits
πŸ“½οΈ
4 y ago
Published
πŸŽ–οΈ
Mahesh Chandra
Publisher
πŸ“ˆ
97%
Success Rate