In an AP , if the first term is 8 and the common difference is 4, then The ninth term of AP is equal to _______ A) 4 (B) 20 (C) 40 (D) 64
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by using formula, an=a+(n-1) d
a9=8+(9-1)4
a9=8+32
a9=40
Answer is 40
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