Mathematics & Riddles
Go to...
Index
Translations
Pronunciation
Images
Computers
Geography
Languages
0 / 60 seg.
NUMBER, PLEASE: In the northern U.S. the number of years between appearances of the insects called periodic cicadas
1
7
Clue
50
70
17
13
Text
Audio
Text & audio
Free text
Multiple option
Previous question
Start
Next question
Please enable JavaScript to continue using this application.