exam Maths Puzzle Numerical Ability

find the distance between the pair of points
(-1, -4) and (-5, -7)

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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? the quotient of a number and -4, less 8, is -2