In mathematics. Fifty is the smallest number that is the sum of two nonzero square numbers in two distinct ways 50 = 1 2 + 7 2 = 5 2 + 5 2. It is also the sum of three squares, 50 = 3 2 + 4 2 + 5 2, and the sum of four squares, 50 = 6 2 + 3 2 + 2 2 + 1 2.It is a Harshad number.. There is no solution to the equation φ(x) = 50, making 50 a nontotient. Nor is there a solution to the equation x ...Creative behavior. Aside from having exhibited the ability to learn complex tricks, dolphins have also demonstrated the ability to produce creative responses. This was studied by Karen Pryor during the mid1960s at Sea Life Park in Hawaii, and was published as The Creative Porpoise Training for Novel Behavior in 1969.
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