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nth Term of an AP

Find18th term...

Question

Find

(1)8th term of 117,104,91,78..

(2)th term of 10,10.5,11,11.5..

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Solution

117-13=104,104-13=91...... (so diff of 13 is logic)

117,104,91,78,65,52,39...26

ans is 26.

2, 10th term of 10.5-10=0.5(difference)

10,10.5,11,11.5, 12,12.5,13,13.5,14,14.5

ans is 14.5

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