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Find out the wrong number in the following number series.
500, 600, 720, 865, 1036.8, 1244.16
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500 * 1.2 = 600
600 * 1.2 = 720
720 * 1.2 = 864 (not 865)
864 * 1.2 = 1036.8
1036.8 * 1.2 = 1244.16
145, 200, 265, 340, 425, 530
122 + 12 = 145
142 + 22 = 200
162 + 32 = 265
182 + 42 = 340
202 + 52 = 425
222 + 62 = 520 (not 530)
12, 18, 45, 157.5, 708.55, 3898.125
12 * 1.5 = 18
18 * 2.5 = 45
45 * 3.5 = 157.5
157.5 * 4.5 = 708.75 (not 708.55)
708.75 * 5.5 = 3898.125
13, 14, 29, 88, 353, 1768
13 * 1 + 1 = 14
14 * 2 + 1 = 29
29 * 3 + 1 = 88
88 * 4 + 1 = 353
353 * 5 + 1 = 1766 (not 1768)
343, 279, 247, 231, 223, 214
343 – 64 = 279
279 – 32 = 247
247 – 16 = 231
231 – 8 = 223
223 – 4 = 219 (not 214)
What value should come in the place of (?) in the following questions.
70 % of 540 – 120 % of 350 = ? * 6
378 – 420 = ? * 6
? = -7
513 ÷ 27+ ? = 55% of 780
513 ÷ 27 + ? = 55% of 780
19 + ? = 429
? = 410
(1170 ÷ 6) – 12 * 6 + 9 * √9= ?
(1170 ÷ 6) – 12 * 6 + 9 * √9 = ?
195 – 72 + 27 = 0
? = 150
16 * ? = √2304 * (208 ÷ 13)
16 * ? = 48 * 16
? = 48
√3969 - √2601 + √784 = ?
63 – 51 + 28 = ?
? = 40
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