IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 548 - 551 of 930
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Question 548
Question MCQ▾
Bhavesh started from his house towards North. After covering a distance of 8 km. he turned towards left and covered a distance of 6 km. what is the shortest distance now from his house?
Choices
Choice (4) | Response | |
---|---|---|
a. | 10 km | |
b. | 2 km | |
c. | 15 km | |
d. | 16 km |
Question 549
Question MCQ▾
The average of 15 numbers is calculated as 20. It is discovered later on that while calculating the average one number, namely 41 was wrongly read as 31. The correct average is________
Choices
Choice (4) | Response | |
---|---|---|
a. | 19.5 | |
b. | 13.5 | |
c. | 20.6 | |
d. | 16.5 |
Question 550
Question MCQ▾
In Arun՚s opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun՚s weight is greater than 60 kg but less than 70 kg. His mother՚s view is that his weight cannot be greater than 68 kg. If all of them are correct in their estimations, what is the average of different probable weights of Arun?
Choices
Choice (4) | Response | |
---|---|---|
a. | 69 kg | |
b. | 67 kg | |
c. | 68 kg | |
d. | Question does not provide sufficient data or is vague |
Question 551
Question MCQ▾
If stands for , stands for , stands for , stands for , stands for , stands for .
Which one of the following expression is not true?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |