If the 10th term of the sequence a, a-b, a-2b, a-3b, __ is 20 and its – McqOptions

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1.	If the 10th term of the sequence a, a-b, a-2b, a-3b, __ is 20 and its 20th term is 10, then its xth term is
A.	20 - x
B.	25 + x
C.	25 - x
D.	30 - x
Answer» E.

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