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1. What is the missing term in the arithmetic sequence 13, ?,-27,-47,...

A.-20
B. 20
C. 7
D. -7
2. What is the arithmetic mean between 22 and 14

A. 20
B. 18
C. 16
D. 14
3. The arithmetic mean between two terms in an arithmetic sequence is 39. if one of these terms is 48, find the other term.

A. 20
B. 30
C. 57
D. 126
4. Insert two arithmetic means between 8 and -19?

A. 17,26
B. -17,-26
C. -1,-10
D. 1, 10
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