exam Maths Puzzle Numerical Ability

please tell me how to solve this problem step by step and how do I solve it ?

12x + 1
and also
5x + 2

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exam Other Question

The figure illustrates the apparatus for a tightrope walker. Two poles are set a(52 feet) apart, but the point of attachment P for the rope is yet to be determined. If the total find all the factors of 48 then classify 48 as primee or composite