For SSC Navy Test you have to clear 100mcqs of intelligence which include maths series question like 4 8 12 ___ and Diagram question.You can prepare this question from Dogar Sons book for ISSB.

Secondly there will be 100mcqs which will be realated to ur academic Major subject and the branch for which u are applying......
For Example If you have applied for IT Branch, than all questions will be related to IT and computer....

Good luck

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"Tumhary nafs ki qeemat Janat hay isy Janat say kam qeemat pey na bechna."