let a and d are respectively first and the common differences of an ap. the 5th element is 1/9 and 9th element is 1/5

let a and d are respectively first and the common differences of an ap

1.	let a and d are respectively first and the common differences of an ap. the 5th element is 1/9 and 9th element is 1/5
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let a and d are respectively first and the common differences of an ap. the 5th element is 1/9 and 9th element is 1/5​

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let a and d are respectively first and the common differences of an ap. the 5th element is 1/9 and 9th element is 1/5