Assertion (A): In the series 3, 10, 17....640, 25th term from the end is 472. Reason(R): nth term of an A.P is tn = a + (n-1) d a. Both A and R are correct and R is correct explanation of A.
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Option a. Both A and R are correct and R is the correct explanation of A.
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Both A and R are correct and R is correct explanation of A.
To find the "nth" term of an arithmetic sequence, start with the first term, a(1). Add to that the product of "n-1" and "d" (the difference between any two consecutive terms). For example, take the arithmetic sequence 3, 9, 15, 21, 27.... a(1) = 3. d = 6 (because the difference between consecutive terms is always 6.
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