The average of seven consecutive odd numbers is 41. What is the smallest of these numbers?
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Correct answer: (D) 35
RRB JE · Mathematics
Average Previous Year Questions
29 Average (Mathematics) questions asked in RRB JE previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 29 questions
- Official answer key
- Free
Other Mathematics topics
What is the average of all the natural numbers from 1 to 94?
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Correct answer: (B) 47.5
If the average of 9 numbers is 17 and one number is removed, the average of the remaining 8 numbers becomes 15. What is the value of the removed number?
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Correct answer: (B) 33
The average marks of some students in a class is 75. When five students are included, the average becomes 78 and the marks of those five students are 80, 85, 89, 81 and 82. Find the total number of students.
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Correct answer: (B) 9
The sum of 8 numbers is 336. Find their average number.
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Correct answer: (A) 42
The average age of 40 boys in a class is 18 years. One boy, aged 26 years left the class, and two new boys joined the class. If the average age of all boys now in the class remains 18 years, then find the average age of the two newcomers.
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Correct answer: (C) 22 years
What is the average of all the natural numbers from 1 to 97?
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Correct answer: (B) 49
The average of four consecutive odd numbers is 36. What is the greatest of these numbers?
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Correct answer: (B) 39
What is the average of all the natural numbers from 1 to 95?
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Correct answer: (B) 48
What is the average of all the natural numbers from 1 to 98?
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Correct answer: (D) 49.5
What is the average of all the natural numbers from 1 to 59?
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Correct answer: (D) 30
The average score of a cricketer in 20 matches is 40 runs. If his highest score in a match was 78 runs, what is the average of his scores in the remaining 19 matches?
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Correct answer: (D) 38
The average age of Mohan and his four friends is 36 years. Mohan is 5 years older than the average age of his four friends. Determine Mohan’s age in years.
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Correct answer: (B) 40
The average marks of a student in six subjects is 94. After re-evaluation in three subjects the marks were changed to 89 from 75, 90 from 82 and 88 from 80. In the remaining subjects, the marks remained unchanged. Find the new average marks.
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Correct answer: (A) 99
What is the average of all the natural numbers from 1 to 87?
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Correct answer: (D) 44
What is the average of all the natural numbers from 1 to 92?
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Correct answer: (C) 46.5
What is the average of all the natural numbers from 1 to 91?
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Correct answer: (B) 46
There are total 120 students in three sections A, B and C of Class 10. The average marks of the three sections is 85. The average marks of section B and C is 88 and the average marks of section A is 78. Find the number of students in section A.
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Correct answer: (A) 36
The average of the first 18 positive multiples of 11 is:
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Correct answer: (A) 104.5
The average of the first 18 positive multiples of 7 is:
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Correct answer: (C) 66.5
The average of the first 18 positive multiples of 14 is:
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Correct answer: (C) 133
In a parallel combination of three resistors, which statement correctly describes the
total current in the circuit?
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Correct answer: (D) It is equal to the sum of the currents through each resistor
In a seminar, 5 teachers and 7 students spent money on books. The average spending
of all of them together was ₹260. The average spending of the teachers alone was ₹400.
Find the average spending amount of the students.
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Correct answer: (A) ₹160
The average of the first 18 positive multiples of 15 is:
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Correct answer: (D) 142.5
The average sale of cars by a dealer per day in the month of March, other than on
Saturdays and Sundays, is 151. The average sale of cars per day on Sundays is 129.
What is the average sale of cars per day on Saturdays, if the first Saturday is on the 3rd
of March and average sale of cars per day for the whole month is 148?
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Correct answer: (B) 150
The average of the first 18 positive multiples of 8 is:
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Correct answer: (A) 76
The average of the first 18 positive multiples of 9 is:
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Correct answer: (C) 85.5
The average of the first 18 positive multiples of 10 is:
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Correct answer: (A) 95
In a factory, the average daily wage of 12 skilled workers and 18 unskilled workers is
₹604. If the average wage of the skilled workers is ₹754, then find the average wage of
the unskilled workers.
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Correct answer: (D) ₹504
How to use these RRB JE Mathematics questions
Every question here was asked in a real RRB JE paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full RRB JE papers as timed tests to check your speed under exam conditions.