odd man out and series, General Mathematics

Question: `11, 13, 17, 19, 23, 29, 31, 37, 41, (.....)`
A
`43`

B
`47`

C
`53`

D
`51`

Note: Numbers are all primes. The next prime is `43`
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Question: `16, 33, 65, 131, 261, (....)`
A
`523`

B
`521`

C
`613`

D
`721`

Note: Each number is twice the preceding one with `1` added or subtracted alternately. So the next number is `(2 xx 261 + 1) = 523`
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Question: `3, 7, 6, 5, 9, 3, 12, 1, 15, (.....)`
A
`18`

B
`13`

C
`-1`

D
`3`

Note: There are two series, beginning respectively with `3` and `7`. In one `3` is added and in another `2` is subtracted. The next number is `1 - 2 = -1`
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Question: `15, 31, 63, 127, 255, (....)`
A
`513`

B
`511`

C
`517`

D
`523`

Note: Each number is double the preceding one plus `1` So, the next number is `(255 xx 2) + 1 = 511`
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Question: `165, 195, 255, 285, 345, (.....)`
A
`375`

B
`420`

C
`435`

D
`390`

Note: Numbers is `15` multiplied by a prime number i.e `15 xx 11, 15 xx 13, 15 xx 17, 15 xx 19, 15 xx 23` So, the next number is `15 xx 29 = 435.`
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Question: `2, 4, 12, 48, 240, (.....)`
A
`960`

B
`1440`

C
`1080`

D
`1920`

Note: Go on multiplying the given numbers by `2, 3, 4, 5, 6.` So, the correct next number is `1440`
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Question: `8, 7, 11, 12, 14, 17, 17, 22, (....)`
A
`27`

B
`20`

C
`22`

D
`24`

Note: There are two series `(8, 11, 14, 17, 20)` and `(7, 12, 17, 22)` increasing by `3` and `5` respekctively.
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Question: `11, 13, 17, 19, 23, 29, 31, 37, 41, (.....)`