观察下面三行数2 -4 8 -16 32 -64,...:①4 -2 10 -14 34 -62,.:②1 -2 4 -8 16 -32,...:③1.第1行第8个数为多少?第2行第8个数为多少?第3行第8个数为多少?2.第3行中是否存在连续的3个数,使得三个数的和为76
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![观察下面三行数2 -4 8 -16 32 -64,...:①4 -2 10 -14 34 -62,.:②1 -2 4 -8 16 -32,...:③1.第1行第8个数为多少?第2行第8个数为多少?第3行第8个数为多少?2.第3行中是否存在连续的3个数,使得三个数的和为76](/uploads/image/z/5502231-63-1.jpg?t=%E8%A7%82%E5%AF%9F%E4%B8%8B%E9%9D%A2%E4%B8%89%E8%A1%8C%E6%95%B02+-4+8+-16+32+-64%2C...%EF%BC%9A%E2%91%A04+-2+10+-14+34+-62%2C.%EF%BC%9A%E2%91%A11+-2+4+-8+16+-32%2C...%EF%BC%9A%E2%91%A21.%E7%AC%AC1%E8%A1%8C%E7%AC%AC8%E4%B8%AA%E6%95%B0%E4%B8%BA%E5%A4%9A%E5%B0%91%3F%E7%AC%AC2%E8%A1%8C%E7%AC%AC8%E4%B8%AA%E6%95%B0%E4%B8%BA%E5%A4%9A%E5%B0%91%3F%E7%AC%AC3%E8%A1%8C%E7%AC%AC8%E4%B8%AA%E6%95%B0%E4%B8%BA%E5%A4%9A%E5%B0%91%3F2.%E7%AC%AC3%E8%A1%8C%E4%B8%AD%E6%98%AF%E5%90%A6%E5%AD%98%E5%9C%A8%E8%BF%9E%E7%BB%AD%E7%9A%843%E4%B8%AA%E6%95%B0%2C%E4%BD%BF%E5%BE%97%E4%B8%89%E4%B8%AA%E6%95%B0%E7%9A%84%E5%92%8C%E4%B8%BA76)
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