Find the common difference of the following Arithmetic sequence. 1) 5,9,13. 2) 25,21,17,. 3) 7,7.3,7.6 4) 8.6,9,9.4 5) 1⅓,3⅔,4,.?
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Answer:
) 5,9,13. 2) is the correct answer
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Solution:-
1) 5,9,13.. A. P.
d = t2-t1 = 9-5 = 4
d = 4
2) 25,21,17... A. P.
d = t2-t1 = 21-25 = -4
d = -4
3) 7,7.3,7.6 ... A. P.
d = t2-t1 = 7.3-7.0 = 0.3
d = 0.3
4) 8.6,9,9.4 ... A. P.
d = 9.0-8.6 = 0.4
d = 0.4
5) 1⅓,3⅔,4,.. A. P.
d = 11/3 - 4/3
= 7/3
= 2 ¹/3.
d = 2 ¹/3.
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