IMO- Mathematics Olympiad Class 7: Questions 863 - 867 of 1012

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Question number: 863

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.

d.

Question number: 864

MCQ▾

Question

The value of , when and is ________.

Choices

Choice (4) Response

a.

0.004032

b.

c.

d.

0.04132

Question number: 865

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.

b.

c.

d.

Question number: 866

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.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 867

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.

b.

c.

d.

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