# IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 226 - 231 of 1059

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## Question 226

### Question

MCQ▾If a, b and c are whole numbers such that a > b and c 0 and c > 0, then

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. | Question does not provide sufficient data or is vague |

## Question 227

### Question

MCQ▾A unit fraction is one of the from where ‘a’ is a natural number (. Any proper fraction can be written as the sum of two or more unit fractions.

{Ex. }

In the case of , the factors of 2 are 1 and 2 only

Express as the sum of two different unit fraction in different ways.

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |

## Question 228

### Question

MCQ▾Difference between the face value of 3 & 5 in 134,890 and 215,648 is

### Choices

Choice (4) | Response | |
---|---|---|

a. | 2 | |

b. | 8 | |

c. | 25,000 | |

d. | 29,242 |

## Question 229

### Question

MCQ▾The co-prime numbers and also prime numbers from the following pairs, is

### Choices

Choice (4) | Response | |
---|---|---|

a. | 47 and 63 | |

b. | 29 and 57 | |

c. | 83 and 97 | |

d. | 31 and 33 |

## Question 230

### Question

MCQ▾The least number which when decreased by 7 is exactly divisible by 6,7, 21 and 42 is

### Choices

Choice (4) | Response | |
---|---|---|

a. | 35 | |

b. | 53 | |

c. | 49 | |

d. | 36 |

## Question 231

### Question

MCQ▾HCF of the two numbers =

### Choices

Choice (4) | Response | |
---|---|---|

a. | Product of numbers × their LCM | |

b. | Product of numbers + their LCM | |

c. | Product of numbers - their LCM | |

d. | Product of numbers ÷ their LCM |