exam Maths Puzzle Numerical Ability

write in logarithmic form (1/2)^4 = 1/16 please help

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exam Other Question

How many 6 digit numbers can be made with any combination and permutation of 3 and 7? (e.g. 377777, 737777, 777333, 733733, 333337) Find the value of the discriminant for 9x^2+1=6x. Then describe the number and type of roots for the equation.

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