the sum of first 20 terms of an AP is one third of the sum of next 20 term if first term is 1 find the sum of first 30 terms of this AP
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Let a be the first term and d be the common difference of the given A.P.
After this, refer to the snap. Thanks :)
After this, refer to the snap. Thanks :)
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mohddanish1:
thank you very much
welcome :)
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Answer:
Step-by-step explanation:15-28x=36
15-36=28x
21=28x
21÷28=x
3/4=x
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