1) 24, 23, ____, 21, 20 a) 89 b) 22 c) 31 d) 78 2) ____, 99, 98, 97, 96 a) 1 b) 65 c) 100 d) 95 3) 54, 53, 52, 51, ____ a) 50 b) 20 c) 52 d) 49 4) 36, 35, ____, 33, 32 a) 100 b) 66 c) 34 d) 10 5) ____, 9, 8, 7, 6 a) 20 b) 10 c) 5 d) 100 6) 41, 40, ____, 38, 37 a) 36 b) 42 c) 13 d) 39 7) 72, 71, ____, 69, 68 a) 73 b) 45 c) 24 d) 70 8) 66, 65, 64, 63, ____ a) 12 b) 67 c) 62 d) 89 9) 92, 91, 90, ____, 88 a) 87 b) 89 c) 93 d) 44 10) ____, 55, 54, 53, 52 a) 78 b) 11 c) 56 d) 88 11) 88, ____, ____, 85, 84 a) 87, 86 b) 90, 91 c) 83, 82 d) 18, 19 12) 5, 4, 3, ____, _____ a) 6, 7 b) 20, 19 c) 2, 1 d) 99, 98 13) 25, ____, ____, 22, 21 a) 26, 27 b) 37, 38 c) 20, 19 d) 24, 23 14) 75, 74, 73, ____, _____ a) 90, 89 b) 72, 71 c) 66, 65 d) 13, 12 15) ____, 99, 98, 97, ____ a) 10 and 8 b) 75 and 70 c) 100 and 96 d) 95 and 90 16) ____, ____, 3, 2, 1 a) 5, 4 b) 100, 99 c) 67, 66 d) 33, 32 17) ____, 62, 61, ____, 59 a) 63 and 60 b) 83 and 70 c) 93 and 100 d) 43 and 30 18) 77, 76, ____, 74, ____ a) 65 and 63 b) 75 and 73 c) 95 and 93 d) 78 and 72

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