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UKMT Junior Kangaroo, 2015

Combinatorics Difficulty 1.0 Junior Find the answer United Kingdom

Ben lives in a large house with his father, mother, sister and brother as well as 2 dogs, 3 cats, 4 parrots and 5 goldfish. How many legs are there in the house?

(A) $18$ (B) $36$ (C) $38$ (D) $46$ (E) $66$

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