CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 12 terms, first term 14, and mean 36. What is its last term?
A. 62
B. 56
C. 58
D. 60
Correct Answer: C
Last = 2×mean − first = 2×36−14 = 58.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 11 terms, first term 13, and mean 43. What is its last term?
A. 77
B. 75
C. 71
D. 73
Correct Answer: D
Last = 2×mean − first = 2×43−13 = 73.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 10 terms, first term 12, and mean 34.5. What is its last term?
A. 57
B. 55
C. 61
D. 59
Correct Answer: A
Last = 2×mean − first = 2×34.5−12 = 57.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 9 terms, first term 11, and mean 27. What is its last term?
A. 47
B. 43
C. 41
D. 45
Correct Answer: B
Last = 2×mean − first = 2×27−11 = 43.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 8 terms, first term 10, and mean 31. What is its last term?
A. 56
B. 50
C. 52
D. 54
Correct Answer: C
Last = 2×mean − first = 2×31−10 = 52.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 12 terms, first term 9, and mean 36.5. What is its last term?
A. 64
B. 62
C. 68
D. 66
Correct Answer: A
Last = 2×mean − first = 2×36.5−9 = 64.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 11 terms, first term 8, and mean 28. What is its last term?
A. 46
B. 52
C. 50
D. 48
Correct Answer: D
Last = 2×mean − first = 2×28−8 = 48.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 10 terms, first term 7, and mean 34. What is its last term?
A. 65
B. 61
C. 59
D. 63
Correct Answer: B
Last = 2×mean − first = 2×34−7 = 61.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 9 terms, first term 6, and mean 26. What is its last term?
A. 48
B. 44
C. 50
D. 46
Correct Answer: D
Last = 2×mean − first = 2×26−6 = 46.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
An arithmetic sequence has 8 terms, first term 5, and mean 19. What is its last term?
A. 37
B. 33
C. 35
D. 31
Correct Answer: B
Last = 2×mean − first = 2×19−5 = 33.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 47. What is their arithmetic mean?
A. 51
B. 55
C. 57
D. 53
Correct Answer: D
Last term = 59; mean = (47+59)/2 = 53.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 43. What is their arithmetic mean?
A. 51
B. 47
C. 53
D. 49
Correct Answer: D
Last term = 55; mean = (43+55)/2 = 49.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 39. What is their arithmetic mean?
A. 43
B. 49
C. 47
D. 45
Correct Answer: D
Last term = 51; mean = (39+51)/2 = 45.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 35. What is their arithmetic mean?
A. 41
B. 43
C. 45
D. 39
Correct Answer: A
Last term = 47; mean = (35+47)/2 = 41.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 31. What is their arithmetic mean?
A. 39
B. 37
C. 35
D. 41
Correct Answer: B
Last term = 43; mean = (31+43)/2 = 37.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 27. What is their arithmetic mean?
A. 35
B. 33
C. 37
D. 31
Correct Answer: B
Last term = 39; mean = (27+39)/2 = 33.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 23. What is their arithmetic mean?
A. 29
B. 31
C. 27
D. 33
Correct Answer: A
Last term = 35; mean = (23+35)/2 = 29.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 19. What is their arithmetic mean?
A. 29
B. 25
C. 23
D. 27
Correct Answer: B
Last term = 31; mean = (19+31)/2 = 25.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 15. What is their arithmetic mean?
A. 25
B. 21
C. 23
D. 19
Correct Answer: B
Last term = 27; mean = (15+27)/2 = 21.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Seven consecutive odd integers start at 11. What is their arithmetic mean?
A. 15
B. 19
C. 21
D. 17
Correct Answer: D
Last term = 23; mean = (11+23)/2 = 17.