In this sequence of numbers (3, 7, 10, 17, 27), after the first two, each number is the sum of the previous two numbers. If you want the fifth number to equal 100, what two positive numbers could you start with?
Solution:
One possibility is 35 and 10 (35, 10, 45, 55, 100)
Another is 20 and 20 (20, 20, 40, 60, 100)
How many more can you come up with?
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