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number series (8.papers)

# numerical reasoning number series questions and answers

Find the missing element in below number series
1
`58, 42, 34, 30, 28, ___`
1. `29`
2. `27`
3. `26`
4. `32`
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2
`1.5, 7.5, 17.5,__, 49.5, 71.5, 97.5`
1. `29.5`
2. `26.5`
3. `27.5`
4. `31.5`
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3
`0.5, 2.5, 12.5, 62.5,__`
1. `260.5`
2. `300.5`
3. `312.5`
4. `312`
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4
`121, 196, 289, 400,__`
1. `529`
2. `569`
3. `629`
4. `528`
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5
`0, 3, 26, 255, __`
1. `3122`
2. `3124`
3. `3120`
4. `3126`
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6
`72,80,88,104,128,__`
1. `136`
2. `144`
3. `152`
4. `160`
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7
`3, 7.5, 16.5, 34.5, 70.5,__`
1. `117.5`
2. `147.5`
3. `167.5`
4. `142.5`
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8
`96, 55, 26, 13, __`
1. `7`
2. `6`
3. `5`
4. `4`
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9
`12, 13, 17, 26, 42,__`
1. `67`
2. `68`
3. `69`
4. `70`
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10
`6, 20,  42, __`
1. `52`
2. `62`
3. `72`
4. `80`
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11
`5,7,__,13,17,25,33,49,65`
1. `8`
2. `9`
3. `10`
4. `11`
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12
`2, 3, 8, 63, __`
1. `3968`
2. `2968`
3. `1198`
4. `1998`
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13
`11, 13, 17, 23, 31, ?`
1. `43`
2. `41`
3. `39`
4. `45`
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14
`3, 1.5, 5, 2.5, 7, 3.5, 11, ?`
1. `4.75`
2. `5.25`
3. `5.5`
4. `5.05`
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15
`21, 26, 33, 42, 53, ?`
1. `64`
2. `66`
3. `69`
4. `63`
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16
`4, 9, 13, 22, 35, ? `
1. `57`
2. `55`
3. `59`
4. `54`
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17
`12, 8, 14, 6, 16, ?`
1. `32`
2. `18`
3. `5`
4. `4`
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18
`128, ?, 82, 62, 44, 28`
1. `99`
2. `104`
3. `106`
4. `109`
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19
`7, 5, 3, 13, 11, 9, 19, 17, ? `
1. `13`
2. `15`
3. `19`
4. `21`
`7, 4, 3, 13, 2, 11, 12, 1, ?`
1. `11`
2. `13`
3. `9`
4. `7`