exam Maths Puzzle Numerical Ability

Thank you for any help you can give me.
If liscense plates are formed by 3 letters followed by 4 digits, how many different liscense plates can be made?
10 digits (0-9)
26 letters

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exam Other Question

angle ABD = (3x +12), angle BDE = (7x-32). These angles are supplementary. Find the measures of both angles I just asked a question but was slightly wrong,here is the correct wording: If f(x)=x(x+3)(x-1), use interval notation to give all values of x where f(x) is greater than 0. The last email said less than 0,I typed it wrong. Thanx