1)
3+7+11+ ..............
..+199
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6
Answer:
3+7+11+15+19+23......
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x is 3+7+11.........+199 , x is (1+2)+(3+4)+(5+6)+...........(99+100) , x is 1+2+3+4+5+6+..........+99+100 , x is 100*(100+1)/2 , x is 100*101/2 , x is 10100/2 ,x is 5050 . Hope it helps please mark me as brainliest!!!
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