Numbers Puzzles
54.  A statue is being carved by a sculptor. The original piece of marble weighed 250 kg. In the first week 30 per cent is cut away. In the second week 20 per cent of the remainder is cut away. In the third week the statue is completed when 25 percent of the remainder is cut away. What is the weight of the final statue? 

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55.  Which is the odd number out? 9421, 7532, 9854, 8612, 6531, 8541 

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56.  What is the factorial of 5? a. 1 b. 120 c. 60 d. 25 e. 15 

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