IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 778 - 780 of 931

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Question 778

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Question

MCQ▾

Which of the following numbers is present only in one figure?

Here in image define the multiple figure combined

Here in Image Define the Multiple Figure Combined

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Choices

Choice (4)Response
a.7
b.3
c.5
d.4

Question 779

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Question

MCQ▾

The owner of a plant nursery wanted to test the effectiveness of a new type of fertilizer. He measured the heights of 5 plants, and then gave each an equal amount of fertilizer. Two weeks later, he measured the heights of the plants again. The graph shows the height of the plants before and after the addition of fertilizer.

PlantsHeight (cm) PLANT HEIGHTS BEFORE AND AFTER THE ADDITION OFFERTILIZER12.515.513.51817.51719.517.522.523Heights Before addition of fertilizerHeights two week after addition of fertilizerPlant 1Plant 2Plant 3Plant 4Plant 50102030Plant 5Heights two week after addition of fertilizer: 23

What was mean growth of the plants, to the nearest tenth of a centimeter?

Choices

Choice (4)Response
a.5.5 cm
b.6 cm
c.5 cm
d.4.5 cm

Question 780

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Question

MCQ▾

A milk vendor has 2 cans of milk. The first contains water and the rest milk. The second contains water. How much milk should he mix from each of the containers so as to get 20 liters of milk such that the ratio of water to milk is ?

Choices

Choice (4)Response
a.14.71 liters, 5.29 liters
b.4.12 liters, 8.52 liters
c.5.12 liters, 17.52 liters
d.17 liters, 15 liters