17, 43, 81, 131 ?

468

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300

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193

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375

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None of these

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Solution

The correct option is B 193
The given series is,

$17, 43, 81, 131 ?$

The pattern is given by,

$43 - 17 = 26$

$81 - 43 = 38$

$131 - 81 = 50$

The difference between these difference is given by,

$38 - 26 = 12$

$50 - 38 = 12$

Hence the next term of the series is,

$131 + 50 + 12 = 193$

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