An autumn leaf collector notices a distinct mathematical pattern in the count of leaves on consecutive branches: Branch 1 has 2 leaves, Branch 2 has 6 leaves, Branch 3 has 12 leaves, and Branch 4 has 20 leaves. Following this pattern, how many leaves are on Branch 5?
30 leaves
The pattern follows n*(n+1) for branch n: Branch 1 = 1*2 = 2; Branch 2 = 2*3 = 6; Branch 3 = 3*4 = 12; Branch 4 = 4*5 = 20; Branch 5 = 5*6 = 30.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Medium. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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