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CBSE Class 11-science Answered

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Asked by Kchawla94 | 02 Mar, 2019, 06:26: PM
answered-by-expert Expert Answer
If we calculate each term of sequence as given in the question, then the sequence is as given below
 
7  9  -9  -7  7  9  -9  -7  7  9  -9  -7  7  9  -9  -7  7  9  -9  -7 ......................etc
 
It is to be noted that in the above sequence is repetition of 4 numbers i.e.,  7  9  -9  -7 
 
for 76 terms there is a complete repetition
 
77-th term is 7,   78-th term is 9 .  Hence 79 th term will be -9
Answered by Thiyagarajan K | 02 Mar, 2019, 10:10: PM

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