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Find the sum 3,7,11,....up to 40terms |
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Answer» Answer: Answer: HEYA......❤✌Here, a= 3, n=40, d=4 Now, sum of the terms is GIVEN by the formula. Sn= n/2(2a+(n-1)d) S40= 40/2(6+156) S40=20×162 S40=3240 The sum is 3240. Hope it's helpful..... ☺ |
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