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Find the wrong term in the following number series
2, 4, 12, 48, 248, 1440
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2 * 1 + 2=4
4 * 2 + 4=12
12 * 3 + 12=48
48 * 4 + 48=240
240 * 5 + 240=1440
360, 320, 286, 252, 220, 190
192 – 1=360
182 – 2=322
172 – 3=286
162 – 4=252
152 – 5=220
142 – 6=190
244, 243, 234, 209, 160, 78
244 – 12 = 243
243 – 32 =234
234 – 52 =209
209 – 72 =160
160 – 92 =79
7, 25, 60, 115, 187, 277
7 + 18=25
25 + 36=61
61 + 54=115
115 + 72=187
187 + 90=277
6850, 5824, 4906, 4080, 3370, 2740
193 – 9=6850
183 – 8=5824
173 – 7=4906
163 – 6=4090
153 – 5=3370
143 – 4=2740
What is the value should come in place of question mark in the following questions?
60% of 190 + √289 * 3 - ? * 17=131
114 + 51 - ? * 17=131
?=2
1600 ÷ 80 + 140 * 5 - √625 * 6 = ? + 10 * 17
20 + 700 – 150=? + 170
?=400
75 % of 180 + 150 % of 110 - √169 * 12= ? – 116
135 + 165 – 156 =? – 116
?=260
90% of 220 - ? ÷ 19= 350 ÷ 7 + 32 * 4
198 - ? ÷ 19= 50 + 128
20=? ÷ 19
?=380
125 % of 40 + 319 – 18 * 15 + 20 % of 80=?
50 + 319 – 270 + 16=?
115=?
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