Riddle

Some adults still use these to count.

Choose an answer

A.Calculators
B.Abacuses
C.Tally marks
D.Fingers
Hint: It's a word with 7 letters, starting with "F".

Answer

Fingers

Why this is the answer

Many adults still count on their fingers, even though it's often thought of as a childhood habit.

This riddle is filed under Logic Puzzles and Brain Teasers and rated Easy.