Average Questions Practice Question and Answer
8 Q: Find the average of all prime numbers between 30 and 50.
1841 05f3f98a89b782961da39381e
5f3f98a89b782961da39381e- 141.8false
- 238.8false
- 337.8false
- 439.8true
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Answer : 4. "39.8"
Q: A cricketer had a certain average of runs for his 64 innings. In his 65th innings, he is bowled out for no score on his part. This brings down his average by 2 runs. His new average of runs is:
1837 05f2a8dc6a7bb0b71009fdc07
5f2a8dc6a7bb0b71009fdc07- 170false
- 268false
- 3130false
- 4128true
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Answer : 4. "128 "
Q: The average weight of 29 students is 40 kg. If the weight of teacher be included the average weight increased by 400 gms. The weight of the teacher is-
1828 0603dce2ee759ac364c8ba6f3
603dce2ee759ac364c8ba6f3- 150 kgfalse
- 249 kgfalse
- 352 kgtrue
- 455 kgfalse
- 5None of thesefalse
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Answer : 3. "52 kg "
Q: The average of 24 number is 65. The average of first 11 number is 67 and the average of last 10 number is 70. If the 12th Number is 13 less than the 13th number , and the 14th number is one more than the 13th number, then the average of 12th and 14th number is:
1827 05f2e6b156bb2fc29b22c6a29
5f2e6b156bb2fc29b22c6a29- 124false
- 236false
- 339true
- 442false
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Answer : 3. "39"
Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1805 05b5cc6c9e4d2b4197774df83
5b5cc6c9e4d2b4197774df83- 142 yrsfalse
- 245 yrstrue
- 336 yrsfalse
- 438 yrsfalse
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Answer : 2. "45 yrs"
Explanation :
Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _______(I) and (x+y)/2 = 30 => x+y = 60 years__________(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.
Q: The average of eleven numbers is 68. The average of the first numbers is 78 and that of the next four number is 63. The 9th number is two time the 11th number and the 10th number is 4 less than the 11th number. What is the average of the 9th and 11th numbers?
1804 06051c6e0d3e3d30b29d9a74e
6051c6e0d3e3d30b29d9a74e- 170.1false
- 270.5true
- 372.6false
- 472.2false
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Answer : 2. "70.5"
Q: The average value found for 20 observations was 75. It was noticed later that 97 was read as 79. So, what was the correct average value? 1800 05d19e0457619fe30b9d34a66
5d19e0457619fe30b9d34a66- 175.7false
- 275.8false
- 375.9true
- 475.6false
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Answer : 3. "75.9"
Explanation :
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Q: What is the average of the following numbers?
38, 92, 45, 25, 60
1782 05da059f500e22578c9e9a658
5da059f500e22578c9e9a65838, 92, 45, 25, 60
- 148false
- 254false
- 356false
- 450false
- 5None of thesetrue
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