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 Skip Navigation LinksMath Help > Inequalities > Inequality Methods > Sum of SQRTs

Puzzle question:

For the non-negative numbers a, b, c and d,

a≤1,
a+b≤5,
a+b+c≤14,
a+b+c+d≤30.

Prove that sqrt(a)+sqrt(b)+sqrt(c)+sqrt(d)≤10

Answer:

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