Mathematics
Average / Arithmetic Mean
What is the average of the first 19 even positive integers?
A. 20
B. 18
C. 22
D. 24
Correct Answer: A
Average = (2+38)/2 = 20.
Mathematics
Average / Arithmetic Mean
What is the average of the first 18 odd positive integers?
A. 18
B. 22
C. 16
D. 20
Correct Answer: A
Average = (1+35)/2 = 18.
Mathematics
Average / Arithmetic Mean
What is the average of the first 17 even positive integers?
A. 20
B. 18
C. 22
D. 16
Correct Answer: B
Average = (2+34)/2 = 18.
Mathematics
Average / Arithmetic Mean
What is the average of the first 16 odd positive integers?
A. 14
B. 16
C. 20
D. 18
Correct Answer: B
Average = (1+31)/2 = 16.
Mathematics
Average / Arithmetic Mean
What is the average of the first 15 even positive integers?
A. 18
B. 16
C. 14
D. 20
Correct Answer: B
Average = (2+30)/2 = 16.
Mathematics
Average / Arithmetic Mean
What is the average of the first 14 odd positive integers?
A. 12
B. 14
C. 18
D. 16
Correct Answer: B
Average = (1+27)/2 = 14.
Mathematics
Average / Arithmetic Mean
What is the average of the first 13 even positive integers?
A. 16
B. 12
C. 14
D. 18
Correct Answer: C
Average = (2+26)/2 = 14.
Mathematics
Average / Arithmetic Mean
What is the average of the first 12 odd positive integers?
A. 14
B. 10
C. 16
D. 12
Correct Answer: D
Average = (1+23)/2 = 12.
Mathematics
Average / Arithmetic Mean
What is the average of the first 11 even positive integers?
A. 12
B. 16
C. 14
D. 10
Correct Answer: A
Average = (2+22)/2 = 12.
Mathematics
Average / Arithmetic Mean
What is the average of the first 10 odd positive integers?
A. 14
B. 10
C. 8
D. 12
Correct Answer: B
Average = (1+19)/2 = 10.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 10 terms, first term 23, and common difference 4. What is the average of its terms?
A. 39
B. 43
C. 41
D. 45
Correct Answer: C
Average of an AP = (first+last)/2 = (23+59)/2 = 41.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 9 terms, first term 21, and common difference 3. What is the average of its terms?
A. 33
B. 35
C. 31
D. 37
Correct Answer: A
Average of an AP = (first+last)/2 = (21+45)/2 = 33.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 8 terms, first term 19, and common difference 6. What is the average of its terms?
A. 44
B. 40
C. 38
D. 42
Correct Answer: B
Average of an AP = (first+last)/2 = (19+61)/2 = 40.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 7 terms, first term 17, and common difference 5. What is the average of its terms?
A. 32
B. 36
C. 30
D. 34
Correct Answer: A
Average of an AP = (first+last)/2 = (17+47)/2 = 32.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 6 terms, first term 15, and common difference 4. What is the average of its terms?
A. 23
B. 25
C. 27
D. 29
Correct Answer: B
Average of an AP = (first+last)/2 = (15+35)/2 = 25.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 10 terms, first term 13, and common difference 3. What is the average of its terms?
A. 28.5
B. 26.5
C. 24.5
D. 30.5
Correct Answer: B
Average of an AP = (first+last)/2 = (13+40)/2 = 26.5.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 9 terms, first term 11, and common difference 6. What is the average of its terms?
A. 33
B. 37
C. 39
D. 35
Correct Answer: D
Average of an AP = (first+last)/2 = (11+59)/2 = 35.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 8 terms, first term 9, and common difference 5. What is the average of its terms?
A. 28.5
B. 30.5
C. 26.5
D. 24.5
Correct Answer: C
Average of an AP = (first+last)/2 = (9+44)/2 = 26.5.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 7 terms, first term 7, and common difference 4. What is the average of its terms?
A. 19
B. 23
C. 17
D. 21
Correct Answer: A
Average of an AP = (first+last)/2 = (7+31)/2 = 19.
Mathematics
Average / Arithmetic Mean
An arithmetic progression has 6 terms, first term 5, and common difference 3. What is the average of its terms?
A. 16.5
B. 10.5
C. 12.5
D. 14.5
Correct Answer: C
Average of an AP = (first+last)/2 = (5+20)/2 = 12.5.