The base-10 (decimal) form of a number is 23. Write up this number in base-2 (binary) form:
10111
Five friends greeted each other when they met. Some of them shook hands, too. The number of handshakes performed by each person were: 2, 3, 4, 3, 2. How many handshakes took place altogether?
7 handshakes
Given is the function f(x) = 2 - 3x . To which number does this function assign the value 5?
x = -1
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