In an AP, a 10=25 and a45=140, the cd is
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Step-by-step explanation:
Hii,Let a be the first term and d be the common difference of the given AP.Then,a10 = 25a - 9d = 25 a = (25+9d ) --------(1)Also,a45 = 140a - 44 d = 140 ------(2)Putting the value of a in equation (2) , we get a - 44d = 14025 + 9d - 4d = 1405d = 140 - 25 5d = 115d = 115/5 = 23Hence,The common difference (cd) of the given AP will be 23 Hope It will help you :))
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23 is the best answer✍ answer ✍✍✍✍✍
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