if 18th term of an ap is 30 more than its 8th term and If the 15th term of the ap is 48 . find ap .
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Answers
Answered by
15
a18=30+a8.
a+17d=30+a+7d.
17d-7d=30.
10d=30.
d=3.
a+14d=48.
a+42=48
a=6.
ap:6,9,12..
....
a+17d=30+a+7d.
17d-7d=30.
10d=30.
d=3.
a+14d=48.
a+42=48
a=6.
ap:6,9,12..
....
princessAulakh:
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Answered by
2
T18 = 30 + t8
a + 17 d= 30 + a + 7d
10 d = 30
D = 3
T15 = 48
a + 14 × 3 = 48
a = 6
Ap = 6, 9, 12 ........
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