Question

nth term of an AP represents is a)d-(n-1) b)(a-d)+nd c) a-(n-1)d d) 2a+(n+1)d​

Answer 1

Answer: The answer is at B: [(a-d) + ad]

Step-by-step explanation:

nth term of an AP = $a_{n} = a + (n-1)d$

∴ Upon opening the bracket:

$a_{n} = a + nd - d$

∴ $a_{n} = (a - d)+ nd$  (commutative property)

Hence, the answer is at B [(a-d) + ad]

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