IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 751 - 757 of 1042

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Question 751

Playing with Numbers

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Question

MCQ▾

If divided by 13 leaves a remainder of 11, and divided by 17 leaves a remainder of 9, then the one՚s digit of N can be ________.

Choices

Choice (4)		Response
a.	3
b.	4
c.	7
d.	9

Question 752

Data Handling

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Question

MCQ▾

A tetrahedron has 4 Faces, 6 Edges then the number of vertices (using Euler՚s formula) is________.

Choices

Choice (4)		Response
a.	4
b.	3
c.	2
d.	1

Question 753

Data Handling

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Question

MCQ▾

The number of students watched TV for more than 7 hours is________.

Choices

Choice (4)		Response
a.	6
b.	2
c.	5
d.	None of the above

Question 754

Playing with Numbers

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Question

MCQ▾

A 5-digit number xy 978 is divisible by 9 such that x + y < 5, where x and y are digits, then possible values of (x, y) are________.

Choices

Choice (4)		Response
a.	(2,1) , (0,3) and (1,2)
b.	(1,2) , (0,3) and (2,1)
c.	(1,2) , (3,0) and (2,1)
d.	None of the above

Question 755

Playing with Numbers

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Question

MCQ▾

If is divided by 5 leaves a remainder of 1, then one՚s digit of must be________.

Choices

Choice (4)		Response
a.	Either 1 or 2
b.	Either 1 or 6
c.	Either 4 or 5
d.	Question does not provide sufficient data or is vague

Question 756

Playing with Numbers

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Question

MCQ▾

21436587 is divisible by________.

Choices

Choice (4)		Response
a.	9
b.	7
c.	2
d.	5

Question 757

Playing with Numbers

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Question

MCQ▾

68790 is divisible by________.

Choices

Choice (4)		Response
a.	4
b.	3
c.	5
d.	Both b. and c. are correct