exam Maths Puzzle Numerical Ability

The diffrence of a number c and 17 is more then 33. Write an ineqaulity to this promblem

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exam Other Question

In 1999, 18.2 million households had a dvd player. If this populaion grows at 25% annually, how many households will have a dvd player in 2004 (5 years later)? A= P(1+r)^t

I got: 55.54 million. Is this correct?
Thanks~
can you help me solve by using the quadratic formula of x^2-4x-5=0?