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1. There are 95 passengers in the first carriage, 110 in the second carriage and 125 in the third carriage, and so on in an arithmetic sequence. How many passengers are there in the 6th carriage?
Answer : 170 passengers
Solution :
2. There are 130 students in grade one , 210 students in grade two and 290 students in grade three and so on in an arithmetic sequence. How many students are there in grade six?
Answer : 530 students
Solution :
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