find the average of all the numbers between 8 and 55 which are divisible by 7

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Fast way to solve average questions with tricks for SSC Exams page 1

Learn how to solve Important average questions fast with fast trick method for Bank exams and SSC Exams like SSC CGL Tier 1, CGl Tier 2, SSC CHSL, SSC DEO & SSC LDC

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CDSE CGL Tier 2 CGLTier 1 CLAT SSC 10+2

1

Vibhor obtained 66, 74, 55, 92, 79  (out of 100) in English, Maths, Physics, Chemistry and Biology. what's his average marks ?

A 75% B 69% C 73.2% D 76% » Explain it 2

In Ashish’s  opinion, his weight is greater than 55 kg but less than 62 kg. His father does not agree with Ashish and he thinks that Ashish’s weight is greater than 50 kg but less than 60 kg. His sister’s view is that his weight can't be greater than 57 kg. If all of them are correct in their estimation, what is the average of different probable weights of Ashish ?

(Given: His weight must be in integer in kg.)

A 56.5 kg B 68 kg C 69 kg D Data inadequate » Explain it 3

The average of 15 numbers is zero. Of them, at the most, how many may be greater than zero?

A 0 B 1 C 10 D 14 » Explain it 4

Find the average of all the numbers between 8 and 55 which are divisible by 7.

A 17 B 31.5 C 34 D 44 » Explain it 5

The average of first five multiples of 5 is:

A 10 B 12 C 15 D 25 » Explain it 25 Shares Share Prev 1 2 Next Next Excercise

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[Solved] What is the average of all numbers between 8 and 74 which ar

First number to be divisible by 7 in this range = 14 Last number to be divisible by 7 in this range = 70 This is an AP with difference = 7 Let the total numb

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What is the average of all numbers between 8 and 74 which are divisible by 7?

This question was previously asked in

SSC CGL Previous Paper 36 (Held On: 21 August 2017 Shift 3)

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40 41 42 43

Answer (Detailed Solution Below)

Option 3 : 42

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RRB JE Previous Paper 1 (Held On: 22 May 2019 Shift 2)

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Detailed Solution

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First number to be divisible by 7 in this range = 14

Last number to be divisible by 7 in this range = 70

This is an AP with difference = 7

Let the total numbers in this AP be n

⇒ Average = Sum of AP/total numbers

⇒ Average = [n/2(last term + first term)]/n

⇒ Average = (last term + first term)/2

∴ Average = (14 + 70)/2 = 42

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More Average Questions

Q1. The average age of a class of 15 students is 20. If we add the teacher's age and exclude one student who is 20 years old, the average age of the class increases by 1. So find the age of the teacher.Q2. Calculate the average. 44, 40, 75, 25, 66 & 80Q3. Find the average of the first 45 numbers that are multiples of 15.Q4. Calculate the average. 74, 56, 89, 92, 68 & 35Q5. Calculate the average. 88, 89, 90, 64, 77 & 90Q6. The average weight of P, Q and R is 53 kg. If the average weight of P and Q is 47 kg and that of Q and R is 48 kg, what is the weight of Q? (In kg)Q7. The average of seven consecutive numbers is 49. What is the largest of these numbers?Q8. A museum has an average of 610 visitors on Sundays and 250 visitors on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday will be _______.Q9. If out of 10 selected students for an examination, 3 were of 20 years age, 4 of 21 and 3 of 22 years, the average age of the group isQ10. The average weight of 25 students is 16 kg. The average weight of the first 12 students is 14 kg and that of the last 12 students is 17 kg. Find the weight of the 13th student.

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Find the average of all the number between 6 and 34 which are divisible by 5 .

Click here👆to get an answer to your question ✍️ Find the average of all the number between 6 and 34 which are divisible by 5 .

Question

Find the average of all the number between 6  and 34  which are divisible by  5.

A

18

B

20

C

24

D

30

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