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CBSE Class 10 Answered

an-ak for the AP a,a+d,a+2d
Asked by harinimathi815 | 21 Feb, 2022, 20:14: PM
answered-by-expert Expert Answer
an - ak = [a + (n-1)d] - [a + (k-1)d]
= (n-1)d - (k-1)d
= (n - 1 - k + 1)d
= (n - k)d
Answered by Renu Varma | 22 Feb, 2022, 15:17: PM

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CBSE 10 - Maths
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