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Arithmetic Sequences  Problem 13
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
An arithmetic number sequence is a number pattern where a constant difference, d, is added to each term to arrive at the next. To determine whether a number pattern is arithmetic, look for a number that is added (or subtracted) to each term in order to arrive at the next. Graphically, these look like linear relationships where the common difference is akin to a slope.
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
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Sample Problems (19)
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Arithmetic Sequences
Problem 1 11,321 viewsGiven 11, 7, 3...
Find a_{301}. 
Arithmetic Sequences
Problem 2 8,674 viewsGiven a_{20} = 101 and a_{21} = 104,
find the general term, a_{n}. 
Arithmetic Sequences
Problem 3 8,052 viewsGiven a_{11} = 52, a_{19} = 92,
find a_{1001} 
Arithmetic Sequences
Problem 4 7,516 viewsFind the number of terms:
7 , 13 , 19 ... 85 3 3 3 3 
Arithmetic Sequences
Problem 5 1,357 views 
Arithmetic Sequences
Problem 6 1,435 views 
Arithmetic Sequences
Problem 7 1,364 views 
Arithmetic Sequences
Problem 8 1,763 views 
Arithmetic Sequences
Problem 9 1,104 views 
Arithmetic Sequences
Problem 10 1,019 views 
Arithmetic Sequences
Problem 11 1,174 views 
Arithmetic Sequences
Problem 12 1,034 views 
Arithmetic Sequences
Problem 13 965 views 
Arithmetic Sequences
Problem 14 1,010 views 
Arithmetic Sequences
Problem 15 989 views 
Arithmetic Sequences
Problem 16 1,010 views 
Arithmetic Sequences
Problem 17 1,065 views 
Arithmetic Sequences
Problem 18 970 views 
Arithmetic Sequences
Problem 19 963 views
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