IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 213 - 219 of 1059
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Question 213
Question
MCQ▾When a number is divided by eight, it has a remainder of 2. When it is divided by nine, it has remainder of 1. What is the number?
Choices
Choice (4) | Response | |
---|---|---|
a. | 15 | |
b. | 12 | |
c. | 34 | |
d. | 10 |
Question 214
Question
MCQ▾What least value should be given to ⊕ so that the number 653 ⊕ 47 is divisible by 11?
Choices
Choice (4) | Response | |
---|---|---|
a. | 9 | |
b. | 6 | |
c. | 7 | |
d. | 1 |
Question 215
Question
MCQ▾The numbers which have more than two factors are called ________.
Choices
Choice (4) | Response | |
---|---|---|
a. | Composite | |
b. | Prime | |
c. | Prime & Composite | |
d. | Question does not provide sufficient data or is vague |
Question 216
Question
MCQ▾The LCM of two numbers is 198. If one number is 396 and another is 66, then the HCF is
Choices
Choice (4) | Response | |
---|---|---|
a. | 132 | |
b. | 144 | |
c. | 231 | |
d. | 154 |
Question 217
Question
MCQ▾The integer which is 7 more than is
Choices
Choice (4) | Response | |
---|---|---|
a. | 4 | |
b. | - 4 | |
c. | - 10 | |
d. | 16 |
Question 218
Question
MCQ▾There are 216 black balls in a basket. A boy takes out 8 black balls from it and replaces them by 16 white balls. He continues to do so, till all black balls are replaced by white balls. Find the number of white balls put in the basket?
Choices
Choice (4) | Response | |
---|---|---|
a. | 462 | |
b. | 654 | |
c. | 432 | |
d. | 485 |
Question 219
Question
MCQ▾Number of prime and co-prime numbers from 30 to 90 are
Choices
Choice (4) | Response | |
---|---|---|
a. | 14 | |
b. | 15 | |
c. | 13 | |
d. | 19 |