Monday, July 13, 2015

School Groups - Answer to Riddle

Riddle link - http://funfactsforkiddos.blogspot.com/2015/07/school-groups-riddle.html 


Answer is 60 days

An approach to solve this riddle is using "Least Common Multiple"(lcm). lcm is the smallest number that is a multiple of all the numbers in question - in this case the numbers are 2, 3, 4, 5 and 6.

Factors of 2 = 2
Factors of 3 = 3
Factors of 4 = 2 X 2
Factors of 5 = 5
Factors of 6 = 2 X 3

lcm(2,3,4,5,6) = 2 X 3 X 2 X 5 = 60

Check the video link below to learn about calculation of lcm;

Least common multiple

Let me know if you have any questions on Least Common Multiple.

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