exam Maths Puzzle Numerical Ability

Solve for x: logbase2(logbase3(logbase4 x)=0

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exam Other Question

The graph of the relation x^2 - 4y^2 + 2x - 8y - 10 = 0 is a (an)

a. point
b. straight line
c. pair of intersecting straight lines
d. circle
e. ellipse
f. hyperbola
g. parabola
h. none of these three pieces of 25 cents and two pieces of a cent have a mass of 27 grams. two pieces of 25 cents pieces and six pieces of a cent have a mass of 32 grams. how is the mass of each pieces