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number series (8.papers)

# numerical reasoning questions and answers

Find the missing element in below number series
1
`288, 57.6, 14.4, 4.8, 2.4, ?`
1. `2`
2. `1`
3. `2.4`
4. `1.4`
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2
`15, 16, 17, 18, 20, 21, 24, ?`
1. `27`
2. `25`
3. `26`
4. `24`
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3
`10, 12, 13, 15, 18, 20, 25, 27, 34, 36, ?`
1. `42`
2. `44`
3. `46`
4. `45`
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4
`1, 1, 3, 27, 6, 216, 10, 1000, ?, 3375`
1. `12`
2. `15`
3. `13`
4. `14`
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5
`313, 7, 414, 9, 515, ?`
1. `10`
2. `11`
3. `12`
4. `13`
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6
`2, 8, 7, 28, 27, ?`
1. `105`
2. `108`
3. `104`
4. `102`
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7
`4, 7, 40, 1591, ?`
1. `2531272`
2. `2531262`
3. `2531279`
4. `2531252`
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8
`5, 2.5, 7.5, 3.75, 11.25, ?`
1. `5693`
2. `5.625`
3. `5246`
4. `5.623`
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9
`215, 325, 435, 545`
1. `623`
2. `645`
3. `655`
4. `566`
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10
`23, 33, 45, 59, 75, ?`
1. `93`
2. `99`
3. `92`
4. `94`
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11
`131, 351, 571, 791, 9111, ?`
1. `11131`
2. `12356`
3. `12459`
4. `12659`
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12
`21, 33, 45, 57, ?`
1. `45`
2. `25`
3. `69`
4. `85`
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13
`0.25, 0.75, 2.25, 6.75,?`
1. `20.5`
2. `20.35`
3. `20.75`
4. `20.25`
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14
`200, 180, 150, 110, 60, ?`
1. `2`
2. `0`
3. `1`
4. `2`
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15
`5760, 480, 48, 6, ?`
1. `2`
2. `3`
3. `1`
4. `5`
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16
`7108, 786, 764, 742, ?`
1. `726`
2. `720`
3. `725`
4. `825`
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17
`43, 39, 35, 31, ?`
1. `27`
2. `26`
3. `24`
4. `29`
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18
`12, 21, 34, 43, 123, ?`
1. `323`
2. `321`
3. `222`
4. `256`
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19
`187, 264, 363, 473, ?`
1. `541`
2. `456`
3. `469`
4. `498`
`133, 284, 362, 414, ?`
1. `526`
2. `200`
3. `500`
4. `255`