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प्रश्न
Check whether the following sequence is in A.P.
`1/2, 1/3, 1/4, 1/5, ...`
उत्तर
`1/2, 1/3, 1/4, 1/5, ...`
t2 – t1 = `1/3 - 1/2 = (2 - 3)/6 = (-1)/6`
t3 – t2 = `1/4 - 1/3 = (3 - 4)/12 = (-1)/12`
t2 – t1 ≠ t3 – t2
The sequence is not in A.P.
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