IMO- Mathematics Olympiad Class 8: Questions 687 - 693 of 1029

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Question number: 687

» Playing With Numbers

MCQ▾

Question

If 1A×AB6 , where A and B are single digit number such that BA=1 , then the values of A and B are________.

Choices

Choice (4) Response
a.

4, 5

b.

5, 4

c.

6, 9

d.

9, 6

Question number: 688

» Data Handling

MCQ▾

Question

Euler’s formula for any polyhedron, where F is the number of faces, V stands for number of vertices and E stands for number of edges is

Choices

Choice (4) Response
a.

V+E+F=2

b.

VE+F=2

c.

VEF=2

d.

V+EF=2

Question number: 689

» Playing With Numbers

MCQ▾

Question

The least value must be given to x so that the number 3128x4 is divisible by 8 is________.

Choices

Choice (4) Response
a.

1

b.

3

c.

4

d.

2

Question number: 690

» Data Handling

MCQ▾

Question

To draw the graph of a line, the least number of points required is________.

Choices

Choice (4) Response
a.

Two

b.

Three

c.

Four

d.

One

Passage

Study the graph carefully and answer the questions given below it.

{"chart":{"plotBackgroundColor":null,"plotShadow":true,"backgroundColor":"transparent","width":600},"title":{"text":"Years vs. Wheat Import"},"tooltip":{"pointFormat":"{series.name}: {point.y}"},"credits":{"enabled":false},"xAxis":{"categories":["1971","1972","1973","1974","1975","1976","1977","1978"],"title":{"text":"Expenditure & saving during a month"}},"yAxis":{"type":"linear","title":{"text":"Wheat Import"},"stackLabels":{"enabled":true,"style":{"fontWeight":"bold","color":"gray"}}},"plotOptions":{"series":{"allowPointSelect":true,"cursor":"pointer"}},"legend":{"floating":true,"backgroundColor":"white","borderColor":"silver","borderWidth":1,"shadow":true},"series":[{"type":"column","name":"Years vs. Wheat Import","data":[3465,1811,2413,4203,7016,5832,2000,2500],"colors":[{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#90ed7d"],[1,"rgb(68,161,49)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#f7a35c"],[1,"rgb(171,87,16)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#8085e9"],[1,"rgb(52,57,157)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#f15c80"],[1,"rgb(165,16,52)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#e4d354"],[1,"rgb(152,135,8)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#2b908f"],[1,"rgb(0,68,67)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#f45b5b"],[1,"rgb(168,15,15)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#91e8e1"],[1,"rgb(69,156,149)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#7cb5ec"],[1,"rgb(48,105,160)"]]},{"linearGradient":{"x1":0,"y1":0,"x2":0,"y2":1},"stops":[[0,"#434348"],[1,"rgb(0,0,0)"]]}],"stacking":"normal","stack":null,"_colorIndex":0}]}
Created with Highcharts 4.2. 3Expenditure & saving during a monthWheat ImportYears vs. Wheat Import3 4651 8112 4134 2037 0165 8322 0002 500Years vs. Wheat Import197119721973197419751976197719780k2k4k6k8k1976Years vs. Wheat Import: 5 832

Question number: 691 (1 of 13 Based on Passage) Show Passage

» Data Handling

MCQ▾

Question

The increase in import in 1975 was what percent of the import in 1976?

Choices

Choice (4) Response
a.

21.00%

b.

25.35%

c.

20.30%

d.

50%

Question number: 692 (2 of 13 Based on Passage) Show Passage

» Data Handling

MCQ▾

Question

The import in 1972 is approximately what pecent of the average import for the given years?

Choices

Choice (4) Response
a.

45.71%

b.

49.54%

c.

44%

d. Question does not provide sufficient data or is vague

Question number: 693 (3 of 13 Based on Passage) Show Passage

» Data Handling

MCQ▾

Question

The import in 1978 is approximately what pecent of the average import for the given years?

Choices

Choice (4) Response
a.

64.71%

b.

55%

c.

68.39%

d. None of the above

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