IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 190 - 195 of 1059

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Question number: 190

» Number Systems

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MCQ▾

Question

Subtract the number obtained by reversing the digits of the number 20198 from the number obtained by interchanging the digits in the unit’s place and the hundred’s place of the same number, we get________.

Choices

Choice (4) Response

a.

77121

b.

- 68229

c.

68004

d.

- 68211

Question number: 191

» Number Systems

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Question

Find the sum of the given expression.

Choices

Choice (4) Response

a.

- 90

b.

- 100

c.

55

d.

100

Question number: 192

» Playing with Numbers

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Question

There are 165 pens and 195 pencils. These pens and pencils are to be arranged in bags containing the same number of pens and pencils. Then the greatest number of pens and pencils possible in each bag is

Choices

Choice (4) Response

a.

23

b.

13

c.

15

d.

18

Question number: 193

» Playing with Numbers

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MCQ▾

Question

Prime factorization of 1975 is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 194

» Playing with Numbers

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MCQ▾

Question

The smallest number which when divided by 20,25,35 and 40 and leaves a remainder of 14,19,29 and 34 respectively is

Choices

Choice (4) Response

a.

1406

b.

1664

c.

1404

d.

1394

Question number: 195

» Number Systems

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Question

Multiplying a negative integer for even number of times gives a ________ result.

Choices

Choice (4) Response

a.

Negative

b.

0

c.

Positive

d.

Question does not provide sufficient data or is vague