exam Maths Puzzle Numerical Ability

I really need help on this question. Thanks in advance! :)

Three peoples ages, when multiplied together give 30030. If these 3 people were born within 10 years of each other, what is the sum of their three ages?

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exam Other Question

I have two expressions that are displayed on my test.

sqrt-49, -7,-sqrt49
I have selected
sqrt-49 and -sqrt49. is this correct?
Solve s^2 = 9/4