Real Numbers (IMO- Mathematics Olympiad (SOF) Class 10): Questions 84 - 88 of 89

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Question number: 84

» Real Numbers

MCQ▾

Question

Three men, four women and six children can complete a work in seven days. A women does double the work a man does and a child does half the work a man does. How many women alone can complete the work in 7 days?

Choices

Choice (4) Response

a.

8

b.

14

c.

7

d.

12

Question number: 85

» Real Numbers

MCQ▾

Question

There are two examination rooms P and Q. If 10 candidates are sent from P to Q, the number of students in each room is the same. If 20 candidates are sent from Q to P, the number of students in P is double the number of students in Q. Find the number of students in each room.

Choices

Choice (4) Response

a.

P = 95, Q = 70

b.

P = 100, Q = 80

c.

P = 110, Q = 60

d.

P = 60, Q = 40

Question number: 86

» Real Numbers

MCQ▾

Question

A group of girls planned a picnic. The budget for food was Due to illness, 10 girls could not go to the picnic and cost of food for each girl increased by . How many girls had planned the picnic?

Choices

Choice (4) Response

a.

50

b.

57

c.

60

d.

65

Question number: 87

» Real Numbers

MCQ▾

Question

A number x is selected from the number 1,2 & 3 and then a second number y is randomly selected from the numbers 1,4 & 9. What is the probability that the product xy of the two numbers will be less than 9?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 88

» Real Numbers

MCQ▾

Question

The average of five consecutive natural number is m. If the next three natural numbers are also included, how much more than m will the average of these 8 numbers be?

Choices

Choice (4) Response

a.

2

b.

1.5

c.

1.4

d.

1

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