IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 223 - 227 of 1059

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Question number: 223

» Playing with Numbers

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MCQ▾

Question

The two numbers nearest to 10000 which are exactly divisible by each of 2,3, 4,5, 6 and 7 is

Choices

Choice (4) Response

a.

10340,10080

b.

9669,10080

c.

9660,10080

d.

9320,10080

Question number: 224

» Playing with Numbers

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MCQ▾

Question

The two consecutive prime numbers with difference 2 are called ________.

Choices

Choice (4) Response

a.

Composite

b.

Even

c.

Twin primes

d.

Co-primes

Question number: 225

» Number Systems

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MCQ▾

Question

If are two whole numbers, then commutative law is applicable to multiplication if

Choices

Choice (4) Response

a.

AND

b.

c.

d.

All a. , b. and c. are correct

Question number: 226

» Number Systems

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MCQ▾

Question

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 number: 227

» Fractions

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MCQ▾

Question

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.