book Maths Puzzle Numerical Ability

square root of 52abto the 3rd divided by the square root of 13a

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book Other Question

A dishonest dealer defrauds his seller and buyer by using forged weights to the extent of 20%. His true gain percent is? solve each of the systems of equations. State which systems have no solution or an infinite number of solutions.
1. x-y+2z=3
-6x+y+3z=7
x+2y-5z=-4

2. x-y-2z=3
x+2