Question 90

Series 1: 2, 5, 8, 11,...

Series 2: 20, 22, 24, 26, ...

What is the first common term in above two series?

Solution

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The terms of series 1 is of the form 3n+2. The terms of series 2 is of the form 20+2m

3n+2 = 20+2m

when n = 6 and m = 1, the above equation satisfies. So, the first common term is 20.

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