exam Maths Puzzle Numerical Ability

how would i factor a problem without a GCD?

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exam Other Question

if four congruent circles are insicribed in a sqaure qith the side length of 20mm what is the peremiter of the shaded portion of the square? Please help me:

1. Joe has a collection of nickels and dimes that is worth $5.65. If the number of dimes were doubles and the number of nickels were increased by 8, the value o