1 Answers

Option 1 : All the statements are required

Using the following notations, we can draw the family tree,

[ alt="RRB OA MFT8 RRBOA 18 Aug 2018 40Q images Q40" src="//storage.googleapis.com/tb-img/production/18/09/RRB_OA_MFT8_RRBOA_18_Aug_2018_40Q_images_Q40.PNG" style="height:275px; width:207px">

From statement I and II,

[ alt="RRB OA MFT8 RRBOA 18 Aug 2018 40Q images Q40a" src="//storage.googleapis.com/tb-img/production/18/09/RRB_OA_MFT8_RRBOA_18_Aug_2018_40Q_images_Q40a.PNG" style="height:141px; width:500px">

The relation between Arjun and Ranjeet is not given. Therefore, Statement I and II together are not sufficient to answer the question.

From statement II and III,

[ alt="RRB OA MFT8 RRBOA 18 Aug 2018 40Q images Q40b" src="//storage.googleapis.com/tb-img/production/18/09/RRB_OA_MFT8_RRBOA_18_Aug_2018_40Q_images_Q40b.PNG" style="height:155px; width:277px">

We don’t know the gender of Ranjeet. Therefore, Statement II and III together are not sufficient to answer the question.

From statement I and III,

[ alt="RRB OA MFT8 RRBOA 18 Aug 2018 40Q images Q40c" src="//storage.googleapis.com/tb-img/production/18/09/RRB_OA_MFT8_RRBOA_18_Aug_2018_40Q_images_Q40c.PNG">

The relation between Arjun and Ranjeet is not given. Therefore, Statement I and III together are not sufficient to answer the question.

Combining all the statements,

[ alt="RRB OA MFT8 RRBOA 18 Aug 2018 40Q images Q40d" src="//storage.googleapis.com/tb-img/production/18/09/RRB_OA_MFT8_RRBOA_18_Aug_2018_40Q_images_Q40d.PNG" style="height:189px; width:370px">

Clearly, Ranjeet is the nephew of Arjun.

Hence, all the statements are required.
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