IMO- Mathematics Olympiad Class 9: Questions 476 - 482 of 919

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Question number: 476

» Polynomials

MCQ▾

Question

ab+bc+ax+cx=

Choices

Choice (4) Response

a.

(x+a)(a+b)

b.

(a+c)(x+b)

c.

(a+b)(x+c)

d.

(ac)(xb)

Question number: 477

» Introduction to Euclid's Geometry

MCQ▾

Question

Two distinct points in a plane determine ________ line.

Choices

Choice (4) Response

a.

Tnree

b.

Two

c.

Unique

d.

All of the above

Question number: 478

» Polynomials

MCQ▾

Question

2x3+y3=

Choices

Choice (4) Response

a.

(2xy)(4x22xy+y2)

b.

(2xy)(4x22xyy2)

c.

(2x+y)(4x22xy+y2)

d.

(2x+y)(4x2+2xy+y2)

Question number: 479

» Statistics and Probability

MCQ▾

Question

The mean weight of 80 students in a class is 60 kg. The mean weight of boys is 70 kg while that of the girls is 50 kg. the number of boys and girls are________

Choices

Choice (4) Response

a.

35, 75

b.

45, 35

c.

40, 40

d.

10, 30

Question number: 480

» Introduction to Euclid's Geometry

MCQ▾

Question

If ∠A and ∠B are complementary angles and m∠A is x˚, which equation can be used to find m∠B which is denoted by y?

Choices

Choice (4) Response

a.

y=(x+180)˚

b.

y=(90x)˚

c.

y=(90+x)˚

d.

y=(180x)˚

Question number: 481

» Everyday Mathematics

MCQ▾

Question

A cloth merchant has announced 25% rebate in prices. If one needs to have a rebate of Rs. 40, then how many shirts each costing Rs. 32, he should purchase?

Choices

Choice (4) Response

a.

10

b.

6

c.

5

d.

7

Question number: 482

» Everyday Mathematics

MCQ▾

Question

By selling a Car for Rs. 70000, a shopkeeper gains 40% . If the profit is reduced to 10% , then the selling price will be ________

Choices

Choice (4) Response

a.

Rs. 75000

b.

Rs. 90000

c.

Rs. 85000

d.

Rs. 55000

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