IMO- Mathematics Olympiad Class 9: Questions 855 - 861 of 919

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Question number: 855

» Everyday Mathematics

MCQ▾

Question

Age of Smith’s father is 4 times of his age. If 5 years ago, father’s age was 7 times of the age of his son at that time. What is Smith’s father present age?

Choices

Choice (4) Response

a.

51 years

b.

60 years

c.

40 years

d.

45 years

Question number: 856

» Polynomials

MCQ▾

Question

If p=(2a) , then a3+6ap+p38 , is ________.

Choices

Choice (4) Response

a.

1

b.

2

c.

0

d.

3

Question number: 857

» Everyday Mathematics

MCQ▾

Question

A and B invest in a business in the ratio 3:2 . If 5% of the total profit goes to charity and A’s share is Rs. 855, the total profit is ________

Choices

Choice (4) Response

a.

Rs. 1576

b.

Rs. 1425

c.

Rs. 1537.50

d.

Rs. 1500

Question number: 858

» Statistics and Probability

MCQ▾

Question

If the mean of 17 observations is 22 and that of another 18 observations is 10, then the mean of 35 observations is ________

Choices

Choice (4) Response

a.

24

b.

15.83

c.

15

d.

24.8

Question number: 859

» Introduction to Euclid's Geometry

MCQ▾

Question

The ratio of two supplementary angles is 3:6 , What is the measure of the greater angle?

Choices

Choice (4) Response

a.

120˚

b.

100˚

c.

140˚

d.

160˚

Question number: 860

» Statistics and Probability

MCQ▾

Question

Two dice are thrown simultaneously. The probability of getting an even number as the sum is________

Choices

Choice (4) Response

a.

52

b.

25

c.

12

d.

13

Question number: 861

» Statistics and Probability

MCQ▾

Question

The median of the following numbers 45, 36, 88, 65, 44, 21, 85, 47, 74 is________

Choices

Choice (4) Response

a.

47

b.

54

c.

88

d.

74

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