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How many terms of AP 2,7,12,17....... add upto 990? |
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Answer» Step-by-step explanation: a=2 d=5 n=? n/2*(2a+(n-1)d))=990 n/2*(4+5n-5)=990 5n²-5n=1980 5n²-5n-1980=0 n²-n-396=0 As the TERM is in DECIMAL values then no TERMS of this ap can ADD up to 990 So kindly check the QUESTION again Hope it helps Mark as Brainliest |
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