In a zoo, each pigeon has 2 legs, and each rabbit has 4 legs, The head count of two species together is 12, and the leg count is 32. How many pigeons and how many rabbits are there in the zoo?
A5 & 10
B6 & 3
C6 & 8
D8 & 4
Answer: D - 8 & 4
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The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
A10
B16
C2
D4
Answer: D - 4
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