IMO- Mathematics Olympiad Class 7: Questions 863 - 867 of 965

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Question number: 863

» Data Handling

MCQ▾

Question

A coin is tossed 80 times and head is obtained 30 times. On tossing a coin at random, the probability of getting a head is ________.

Choices

Choice (4) Response

a.

0

b.

1

c.

38

d.

58

Question number: 864

» Algebraic Expressions

MCQ▾

Question

The value of (1.2a4b2)×(2.1a2b2) , when a=1 and b=0.2 is ________.

Choices

Choice (4) Response

a.

0.004032

b.

0.04312

c.

0.00432

d.

0.04132

Question number: 865

» Data Handling

MCQ▾

Question

A die is tossed 50 times and the number 5 is obtained 25 times. Now, a dice is tossed at random, then the probability of getting the number 5 is ________.

Choices

Choice (4) Response

a.

12

b.

15

c.

53

d.

110

Question number: 866

» Perimeter and Area

MCQ▾

Question

Calculate the area of the shaded region of the following figure. ABCD is a rectangle having length 40 cm, breadth 30 cm. E, F and G are midpoints of AB, CD and AD respectively.

Image of a rectangle having triangular shaded part in it

Image of a Rectangle Having Triangular Shaded Part in It

Showing an image of a rectangle having triangular shaded part in it, so find the area of the shaded region

Choices

Choice (4) Response

a.

325cm2

b.

300cm2

c.

350cm2

d.

375cm2

Question number: 867

» Perimeter and Area

MCQ▾

Question

The area of two circles are in the ratio 64: 81. Then the ratio of their circumference is ________.

Choices

Choice (4) Response

a.

3:4

b.

8:9

c.

6:5

d.

4:3

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