book Maths Puzzle Numerical Ability

-0.3054 * 10 to the power of 1 = ?

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book Other Question

x2</sup> = x + 110 Can anyone answer this?
There are two spinners, one is divided into thirds with green,
yellow and blue. The second spinner is divided into fourths with
blue, yellow, red and white.
find the theoretical probability of spinning blue on both.</PRE>