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प्रश्न
12, 16, 20, 24, ...... Find 25th term of this A.P.
उत्तर
The given A.P. is 12, 16, 20, 24, ......
Here, a = 12, d = 16 – 12 = 4
Since tn = a + (n – 1)d
t25 = 12 + (25 – 1)(4)
= 12 + 24(4)
= 12 + 96
= 108
∴ 25th term of the given A.P. is 108.
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