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When 60 added to the first term of an A.P, we get its 11th term. Which number should be added to its first term to get the 19th term? Can 75 be the difference between any of the two terms of this sequence? |
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Answer» Differences between first term and 11th term is = 60 (11 – 1 = 10) 10 times of common difference = 60 Common difference = 60/10 = 6 Differences between first term and 19th term is = 18 x common difference = 18 x 6 = 108 When 108 is added to the first term, we get 19th term. The difference between two terms in an A.P is the multiple of common difference. 75 is not the multiple of common difference 6. So 75 cannot be the difference between two terms in the series. |
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