Free on line practice
A good for exams puzzle
Collection missing numbers #Puzzle 115
One more puzzle find the missing number,
from the collection Panos kalliantasis
By Panos kalliantasis(Pan&Pan).
for fans of brain teasers
and for evaluations of executives from companies and organizations.
Below you can see the answer and the detail explanation
First circle
First circle
4^2 +1^2 +3^2 +2^2 =30
Second circle
2^2+5^2+3^2+4^2=4+25+9+16=54
Third circle
3^2+4^2+3^2+4^2=9+16+9+16= 50
Third circle
3^2+4^2+3^2+4^2=9+16+9+16= 50
Correct answer is 50
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