model 2 average of consecutive numbers Practice Questions Answers Test with Solutions & More Shortcuts
average PRACTICE TEST [9 - EXERCISES]
model 1 basic average questions
model 2 average of consecutive numbers
model 3 twice, thrice, one third etc. of numbers
model 4 find nth average from 1st & last number
model 5 find new average from error
model 6 find average of excluded number
model 7 average on ages/weight
model 8 find monthly income
model 9 average on cricket/exam
Question : 16 [SSC CGL Tier-II 2016]
The average of 7 consecutive numbers is 20. The largest of these numbers is
a) 26
b) 24
c) 23
d) 20
Answer »Answer: (c)
Average of 7 consecutive numbers = 20
∴ Fourth number = 20
∴ Largest number = 20 + 3 = 23
Question : 17 [SSC CGL Tier-II 2016]
The sum of three consecutive even numbers is 28 more than the average of these three numbers. Then the smallest of these three numbers is
a) 16
b) 14
c) 12
d) 6
Answer »Answer: (c)
Let three consecutive even numbers be x, x + 2 and x + 4. According to the question,
(x + x + 2 + x + 4) – ${x+x+2+x+4}/3$= 28
⇒ (3x + 6) – ${3x+6}/3$ = 28
⇒ (3x + 6) – (x + 2) = 28
⇒ 3x + 6 – x – 2 = 28
⇒ 2x + 4 = 28
⇒ 2x = 28 – 4 = 24
⇒ x = $24/2$ = 12
Question : 18 [SSC CPO 2003]
The average of first nine prime numbers is
a) 11$1/9$
b) 11$2/9$
c) 11
d) 9
Answer »Answer: (a)
Using Rule 1,
Average of numbers = ${x_1+x_2+…+x_n}/n$
The required average
=${2+3+5+7+11+13+17+19+23}/9$
=$100/9$ = 11 $1/9$
Question : 19 [SSC CHSL 2017]
The average of 25 consecutive odd integers is 55. The highest of these integers is
a) 109
b) 155
c) 105
d) 79
Answer »Answer: (d)
Average of 25 consecutive odd numbers = 55
∴ Mid number i.e. 13th number = 55
∴ 25th number = 55 + 2 × 12
= 55 + 24 = 79
Question : 20 [SSC CGL 2013]
The average of the first nine integral multiples of 3 is
a) 18
b) 15
c) 12
d) 21
Answer »Answer: (b)
Required average
= ${3(1+2+3+…+9)}/9$
= ${9×10}/{2×3}$ = 15
Aliter : Using Rule 9,
Here, n = 9, x = 3
Average = x$({1+n}/2)$
= 3$({1+9}/2)$ = 15
IMPORTANT quantitative aptitude EXERCISES
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Basic Average Questions Practice Test, Shortcuts, Tricks, PDF »
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New Average Aptitude MCQ Average of Consecutive Numbers »
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Top 99+ Average Aptitude: Twice, One Third of Numbers MCQ »
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New +99 Average Aptitude MCQ Find nth Average of Numbers »
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99+ Average Aptitude Find New Average from Error MCQ Test »
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Top 99+ Aptitude MCQ Test on Average With Excluded Number »
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Top 99+ Aptitude Average on Ages & Weights MCQ Test Quiz »
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Top Aptitude Average MCQ Find Monthly Income for Average »
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Top 149+ Aptitude Average on Cricket & Exam MCQ Test Quiz »
model 2 average of consecutive numbers Shortcuts »
Click to Read...model 2 average of consecutive numbers Online Quiz
Click to Start..average Shortcuts and Techniques with Examples
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model 1 basic average questions
Defination & Shortcuts … -
model 2 average of consecutive numbers
Defination & Shortcuts … -
model 3 twice, thrice, one third etc. of numbers
Defination & Shortcuts … -
model 4 find nth average from 1st & last number
Defination & Shortcuts … -
model 5 find new average from error
Defination & Shortcuts … -
model 6 find average of excluded number
Defination & Shortcuts … -
model 7 average on ages/weight
Defination & Shortcuts … -
model 8 find monthly income
Defination & Shortcuts … -
model 9 average on cricket/exam
Defination & Shortcuts …
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