1.The fifth term of an arithmetic sequence is 13 and the sixth term is 16.Determine the first four terms in the sequence.
2.The first term of an arithmetic sequence is -1 and the fifteenth term is 27.Find the common difference and the sum of the first fifteen terms.
3.There are 130 students in grade one, 210 students in grade two and 290 students in grade three in a primary school, and so on in arithmetic sequence.What is the total amount of students in the primary school?(Primary School has 6 grades)
4.A writer wrote 890 words on the firsf day, 760 words on the second day and 630 words on the third day, and so on.How many words did the writer write on the 7th day?
2.The first term of an arithmetic sequence is -1 and the fifteenth term is 27.Find the common difference and the sum of the first fifteen terms.
3.There are 130 students in grade one, 210 students in grade two and 290 students in grade three in a primary school, and so on in arithmetic sequence.What is the total amount of students in the primary school?(Primary School has 6 grades)
4.A writer wrote 890 words on the firsf day, 760 words on the second day and 630 words on the third day, and so on.How many words did the writer write on the 7th day?
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Answer:
1.) 1, 4, 7, 10
2.) Common Difference is 2
The Sum of the first fifteen terms is 195
3.) 1 980 Total Amount of Students in The Primary School
4) 110 Words