須磨の300番問題
四角形ABCDにおいて、角ABD,DBC,BCA,ACDがそれぞれa,b,c,d度のとき、
角ADBは何度か。
a b c d a b c d a b c d
[ 1] 10 10 20 80 [ 51] 10 30 70 30 [101] 20 10 130 30
[ 2] 10 10 30 40 [ 52] 10 30 70 40 [102] 20 20 20 80
[ 3] 10 10 30 110 [ 53] 10 30 80 20 [103] 20 20 30 50
[ 4] 10 10 40 30 [ 54] 10 30 80 30 [104] 20 20 30 100
[ 5] 10 10 40 70 [ 55] 10 30 80 50 [105] 20 20 40 40
[ 6] 10 10 40 110 [ 56] 10 30 100 20 [106] 20 20 40 70
[ 7] 10 10 50 50 [ 57] 10 30 100 30 [107] 20 20 40 100
[ 8] 10 10 50 80 [ 58] 10 30 110 20 [108] 20 20 60 60
[ 9] 10 10 60 40 [ 59] 10 30 110 30 [109] 20 20 80 50
[ 10] 10 10 60 60 [ 60] 10 30 120 20 [110] 20 20 100 30
[ 11] 10 10 60 80 [ 61] 10 40 30 40 [111] 20 20 100 40
[ 12] 10 10 100 30 [ 62] 10 40 50 20 [112] 20 20 100 50
[ 13] 10 10 100 40 [ 63] 10 40 50 30 [113] 20 20 110 30
[ 14] 10 10 100 50 [ 64] 10 40 80 20 [114] 20 20 110 40
[ 15] 10 10 110 30 [ 65] 10 40 80 30 [115] 20 20 120 30
[ 16] 10 10 110 40 [ 66] 10 40 80 40 [116] 20 30 20 60
[ 17] 10 10 120 20 [ 67] 10 40 100 20 [117] 20 30 30 40
[ 18] 10 10 120 30 [ 68] 10 50 60 20 [118] 20 30 30 80
[ 19] 10 10 120 40 [ 69] 10 50 60 40 [119] 20 30 50 30
[ 20] 10 10 130 20 [ 70] 10 50 80 20 [120] 20 30 50 60
[ 21] 10 10 130 30 [ 71] 10 60 40 20 [121] 20 30 50 80
[ 22] 10 10 140 20 [ 72] 10 60 70 30 [122] 20 30 70 40
[ 23] 10 20 20 40 [ 73] 10 60 80 20 [123] 20 30 80 30
[ 24] 10 20 30 70 [ 74] 10 70 40 30 [124] 20 30 80 40
[ 25] 10 20 40 20 [ 75] 10 70 50 20 [125] 20 30 80 60
[ 26] 10 20 40 40 [ 76] 10 70 50 30 [126] 20 30 100 30
[ 27] 10 20 40 80 [ 77] 10 70 60 20 [127] 20 30 100 40
[ 28] 10 20 50 30 [ 78] 10 70 80 20 [128] 20 30 110 30
[ 29] 10 20 50 50 [ 79] 10 100 30 20 [129] 20 40 20 50
[ 30] 10 20 50 80 [ 80] 10 100 40 20 [130] 20 40 40 30
[ 31] 10 20 70 30 [ 81] 20 10 20 120 [131] 20 40 40 70
[ 32] 10 20 70 40 [ 82] 20 10 30 80 [132] 20 40 60 40
[ 33] 10 20 80 20 [ 83] 20 10 40 60 [133] 20 40 60 50
[ 34] 10 20 80 40 [ 84] 20 10 40 100 [134] 20 40 70 40
[ 35] 10 20 80 50 [ 85] 20 10 40 120 [135] 20 40 80 30
[ 36] 10 20 100 20 [ 86] 20 10 50 50 [136] 20 40 80 50
[ 37] 10 20 100 30 [ 87] 20 10 50 80 [137] 20 40 100 30
[ 38] 10 20 100 40 [ 88] 20 10 50 100 [138] 20 50 40 60
[ 39] 10 20 110 20 [ 89] 20 10 70 40 [139] 20 50 70 30
[ 40] 10 20 110 30 [ 90] 20 10 70 70 [140] 20 50 70 40
[ 41] 10 20 110 40 [ 91] 20 10 70 80 [141] 20 60 20 40
[ 42] 10 20 120 20 [ 92] 20 10 80 50 [142] 20 60 30 50
[ 43] 10 20 130 20 [ 93] 20 10 80 60 [143] 20 60 50 30
[ 44] 10 30 20 30 [ 94] 20 10 100 40 [144] 20 60 50 50
[ 45] 10 30 30 20 [ 95] 20 10 100 50 [145] 20 60 70 30
[ 46] 10 30 30 50 [ 96] 20 10 100 60 [146] 20 60 70 40
[ 47] 10 30 40 30 [ 97] 20 10 110 30 [147] 20 60 80 30
[ 48] 10 30 40 60 [ 98] 20 10 110 40 [148] 20 80 30 40
[ 49] 10 30 60 20 [ 99] 20 10 110 50 [149] 20 80 40 30
[ 50] 10 30 60 40 [100] 20 10 120 40 [150] 20 80 40 40
a b c d a b c d a b c d
[151] 20 80 50 30 [201] 30 50 60 60 [251] 50 20 40 100
[152] 20 100 20 30 [202] 30 50 70 40 [252] 50 20 70 80
[153] 20 100 40 30 [203] 30 50 80 40 [253] 50 30 20 100
[154] 30 10 20 130 [204] 30 70 20 50 [254] 50 30 30 80
[155] 30 10 30 100 [205] 30 70 30 40 [255] 50 30 40 70
[156] 30 10 30 130 [206] 30 70 50 50 [256] 50 30 40 100
[157] 30 10 40 80 [207] 30 70 60 40 [257] 50 30 60 80
[158] 30 10 40 110 [208] 30 80 30 50 [258] 50 30 70 70
[159] 30 10 60 60 [209] 30 80 40 40 [259] 50 30 80 60
[160] 30 10 60 80 [210] 30 100 20 40 [260] 50 50 20 80
[161] 30 10 60 100 [211] 30 100 30 40 [261] 50 50 60 60
[162] 30 10 70 70 [212] 40 10 30 110 [262] 60 10 30 120
[163] 30 10 70 80 [213] 40 10 50 80 [263] 60 10 40 120
[164] 30 10 80 50 [214] 40 10 50 100 [264] 60 10 70 80
[165] 30 10 80 70 [215] 40 10 50 110 [265] 60 20 20 120
[166] 30 10 100 50 [216] 40 10 80 60 [266] 60 20 30 100
[167] 30 10 100 60 [217] 40 10 80 70 [267] 60 20 30 120
[168] 30 10 110 40 [218] 40 10 100 60 [268] 60 20 50 80
[169] 30 10 110 50 [219] 40 20 20 110 [269] 60 20 50 100
[170] 30 10 120 40 [220] 40 20 40 70 [270] 60 20 70 80
[171] 30 20 20 100 [221] 40 20 40 110 [271] 60 20 80 70
[172] 30 20 30 70 [222] 40 20 50 80 [272] 60 40 30 80
[173] 30 20 30 110 [223] 40 20 60 70 [273] 60 40 50 80
[174] 30 20 50 50 [224] 40 20 60 80 [274] 60 60 20 80
[175] 30 20 50 70 [225] 40 20 80 50 [275] 60 60 40 70
[176] 30 20 50 100 [226] 40 20 80 70 [276] 70 10 20 140
[177] 30 20 60 60 [227] 40 20 100 50 [277] 70 10 40 110
[178] 30 20 80 40 [228] 40 30 30 70 [278] 70 10 50 100
[179] 30 20 80 60 [229] 40 30 30 100 [279] 70 10 50 110
[180] 30 20 80 70 [230] 40 30 40 60 [280] 70 10 60 100
[181] 30 20 100 40 [231] 40 30 40 80 [281] 70 30 20 110
[182] 30 20 100 50 [232] 40 30 50 80 [282] 70 30 30 110
[183] 30 20 110 40 [233] 40 30 70 60 [283] 70 30 50 80
[184] 30 30 20 80 [234] 40 30 70 70 [284] 70 30 60 80
[185] 30 30 40 70 [235] 40 30 80 50 [285] 70 40 20 100
[186] 30 30 80 50 [236] 40 30 80 60 [286] 70 40 30 100
[187] 30 30 100 40 [237] 40 40 20 80 [287] 70 40 40 80
[188] 30 40 30 50 [238] 40 40 40 70 [288] 70 40 50 80
[189] 30 40 30 80 [239] 40 40 60 60 [289] 80 20 30 110
[190] 30 40 40 60 [240] 40 40 80 50 [290] 80 20 40 100
[191] 30 40 40 80 [241] 40 60 30 70 [291] 80 20 40 110
[192] 30 40 60 60 [242] 40 60 50 50 [292] 80 20 50 100
[193] 30 40 70 40 [243] 40 70 20 60 [293] 80 30 30 100
[194] 30 40 70 50 [244] 40 70 30 50 [294] 80 30 40 100
[195] 30 40 80 40 [245] 40 70 40 60 [295] 100 10 30 130
[196] 30 40 80 50 [246] 40 70 50 50 [296] 100 10 40 120
[197] 30 50 20 60 [247] 50 10 40 100 [297] 100 20 20 130
[198] 30 50 30 70 [248] 50 10 60 80 [298] 100 20 40 110
[199] 30 50 40 70 [249] 50 10 60 100 [299] 100 30 20 120
[200] 30 50 60 40 [250] 50 20 40 80 [300] 100 30 30 110
解答
[ 1] 10 [ 51] 30 [101] 100 [151] 20 [201] 10 [251] 20
[ 2] 20 [ 52] 20 [102] 10 [152] 10 [202] 40 [252] 30
[ 3] 10 [ 53] 50 [103] 20 [153] 10 [203] 30 [253] 10
[ 4] 30 [ 54] 30 [104] 10 [154] 10 [204] 10 [254] 20
[ 5] 20 [ 55] 10 [105] 30 [155] 20 [205] 20 [255] 30
[ 6] 10 [ 56] 50 [106] 20 [156] 10 [206] 10 [256] 10
[ 7] 30 [ 57] 20 [107] 10 [157] 30 [207] 20 [257] 20
[ 8] 20 [ 58] 40 [108] 30 [158] 20 [208] 10 [258] 30
[ 9] 40 [ 59] 10 [109] 40 [159] 50 [209] 20 [259] 50
[ 10] 30 [ 60] 20 [110] 80 [160] 40 [210] 10 [260] 10
[ 11] 20 [ 61] 10 [111] 50 [161] 20 [211] 10 [261] 30
[ 12] 70 [ 62] 30 [112] 20 [162] 50 [212] 20 [262] 20
[ 13] 50 [ 63] 20 [113] 80 [163] 40 [213] 40 [263] 20
[ 14] 30 [ 64] 40 [114] 30 [164] 70 [214] 30 [264] 60
[ 15] 70 [ 65] 20 [115] 60 [165] 50 [215] 20 [265] 10
[ 16] 40 [ 66] 10 [116] 10 [166] 80 [216] 70 [266] 20
[ 17] 100 [ 67] 30 [117] 20 [167] 50 [217] 60 [267] 10
[ 18] 60 [ 68] 30 [118] 10 [168] 100 [218] 70 [268] 40
[ 19] 20 [ 69] 10 [119] 40 [169] 70 [219] 10 [269] 20
[ 20] 100 [ 70] 30 [120] 20 [170] 100 [220] 30 [270] 40
[ 21] 30 [ 71] 20 [121] 10 [171] 10 [221] 10 [271] 60
[ 22] 70 [ 72] 10 [122] 40 [172] 20 [222] 30 [272] 20
[ 23] 10 [ 73] 20 [123] 60 [173] 10 [223] 40 [273] 20
[ 24] 10 [ 74] 10 [124] 40 [174] 40 [224] 30 [274] 10
[ 25] 30 [ 75] 20 [125] 10 [175] 30 [225] 70 [275] 20
[ 26] 20 [ 76] 10 [126] 60 [176] 10 [226] 30 [276] 10
[ 27] 10 [ 77] 20 [127] 20 [177] 40 [227] 70 [277] 30
[ 28] 30 [ 78] 10 [128] 40 [178] 70 [228] 20 [278] 40
[ 29] 20 [ 79] 10 [129] 10 [179] 40 [229] 10 [279] 30
[ 30] 10 [ 80] 10 [130] 30 [180] 20 [230] 30 [280] 40
[ 31] 40 [ 81] 10 [131] 10 [181] 80 [231] 20 [281] 10
[ 32] 30 [ 82] 20 [132] 30 [182] 40 [232] 20 [282] 10
[ 33] 60 [ 83] 30 [133] 20 [183] 70 [233] 40 [283] 40
[ 34] 30 [ 84] 20 [134] 30 [184] 10 [234] 20 [284] 40
[ 35] 20 [ 85] 10 [135] 50 [185] 20 [235] 60 [285] 10
[ 36] 70 [ 86] 40 [136] 10 [186] 40 [236] 30 [286] 10
[ 37] 40 [ 87] 30 [137] 30 [187] 50 [237] 10 [287] 30
[ 38] 20 [ 88] 20 [138] 10 [188] 20 [238] 20 [288] 30
[ 39] 70 [ 89] 60 [139] 40 [189] 10 [239] 30 [289] 20
[ 40] 30 [ 90] 40 [140] 20 [190] 20 [240] 40 [290] 30
[ 41] 10 [ 91] 30 [141] 10 [191] 10 [241] 10 [291] 20
[ 42] 60 [ 92] 60 [142] 10 [192] 20 [242] 30 [292] 30
[ 43] 30 [ 93] 50 [143] 30 [193] 50 [243] 10 [293] 20
[ 44] 10 [ 94] 80 [144] 10 [194] 30 [244] 20 [294] 20
[ 45] 20 [ 95] 60 [145] 30 [195] 50 [245] 10 [295] 20
[ 46] 10 [ 96] 30 [146] 10 [196] 20 [246] 20 [296] 30
[ 47] 20 [ 97] 100 [147] 20 [197] 10 [247] 30 [297] 10
[ 48] 10 [ 98] 80 [148] 10 [198] 10 [248] 50 [298] 30
[ 49] 40 [ 99] 40 [149] 20 [199] 10 [249] 30 [299] 10
[ 50] 20 [100] 60 [150] 10 [200] 40 [250] 30 [300] 20