if the first term of an AP is - 17 and common difference is 3 then the 21st term is ______
Answers
Answered by
2
Step-by-step explanation:
(1) 2, 4, 6, 8,....
(2) 2,
5
2
, 3,
7
3
,....
(3) –10, –6, –2, 2...
(4) 0.3, 0.33, 0.333,...
(5) 0, –4, –8, –12,...
(6) -
1
5
,-
1
5
,-
1
5
,...
(7) 3, 3+
√
2
, 3+2
√
2
, 3+3
√
2
(8) 127, 132, 137,...
Answered by
1
Answer:
a=-17
d=3
n=21
an=a+(n-1)d
=-17+(21-1)3
=-17+(20)3
=-17+60
=+43
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