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ICSE Class 10 Answered

Insert six A.M. between 15 and -15
Asked by aadityakumarsharma81875 | 06 Mar, 2019, 10:15: AM
answered-by-expert Expert Answer
If 6 arithmetic means are inserted between 15 and -15,  we have 8 terms in Arithmetic progression
 
8-th term : t8 = 15+7d = -15  , d = -30/7   , where d is the common difference
 
hence the sequence :  15 ,  15-(30/7) ,  15 - (60/7) ,  15 - (90/7) , 15 -(120/7),  15 - (150/7) , 15-(180/7), -15
Answered by Thiyagarajan K | 06 Mar, 2019, 10:29: AM

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