Sum
Which of the following are in arithmetic progression
5, 9, 12, 18
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Solution
5, 9, 12, 18
`d_1 = 9 - 5 = 4`
`d_2 = 12 - 9 = 3`
Since `d_1 != d_2` the given sequence is not in arithematic progression
Concept: Arithmetic Progression - Finding Their General Term
Is there an error in this question or solution?
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