Question

A girl counted in the following way on the fingers of her left hand She started by calling the thumb 1, the index finger 2, middle finger 3, ring finger 4, little finger 5 and then reversed direction calling the ring finger 6, middle finger 7 and so on. She counted up to 1994. She ended counting on which finger ?

• A. Thumb
• B. Index finger
• C. Middle finger
• D. Ring finger

Answer 1

Answer: (B)

Index finger

It is quite clear that counting of the numbers associated to the thumb will be : $1,9,17,25,.....$

i.e. numbers of the form $(8n+1).$

Since, $1994=249\times 8+2$, so $1993$ shall correspond to the thumb and $1994$ to the index finger.

Hence, option (B) is the correct answer.