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Q: What is 85 plus 78 plus 80 plus 87 plus 93 plus 90 plus 84 plus 87 plus 81?

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83

81 - 3 = 78 81 - -3 = 84

The variance of 73 72 67 74 78 84 79 71 76 76 79 81 75 80 78 76 78 = 16.8456

400 - 78 - 22 --84 - 16 - 81 - 19 - 27 = 400 - 78 - 22 + 84 - 16 - 81 - 19 - 27 = 241

84+73+78 = 235.

78 + 84 = 162

For 98 78 86 88 84 81 93 92 89 and 81: σ=6.2361

Median: 80 Mode: 72, 80, 120, 98, 78, 84, 77

84

The composite numbers are: 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86 ,87, 88

70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85 (including 70 and 85)

Natural isotopes of krypton are: Kr-78, Kr-80, Kr-81, Kr-82, Kr-83, Kr-84, Kr-86.

78 appears more than any other number, so it is the mode.

84

62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88.60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90

81 84 87

84 * 78 = 80*70 + 80*8 + 4*70 + 4*8 = 5600 + 640 + 280 + 32 = 6552

400

87

For 72 68 64 90 80 84 78 75 76 77: σ=7.4863

Floors 78 to 84....floor 81 was the impact zone.

81, 84, 87.

76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99.

80, 81, 82, 84, 85, 86, 87, 88, 90

80, 81, 82, 84, 85, 86, 87, 88, 90

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