IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 397 - 408 of 1022

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Question 397

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Question

MCQ▾

The value of , if is ________.

Choices

Choice (4)Response
a.1850
b.1844
c.1825
d.1840

Question 398

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Question

MCQ▾

The value of x in is ________.

Choices

Choice (4)Response
a.3
b.
c.1
d.

Question 399

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Question

MCQ▾

The algebraic expression obtained on addition of following algebraic expression is ________.

Choices

Choice (4)Response
a.2y
b.
c.
d.0

Question 400

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Question

MCQ▾

The value of 25 coins of 20 p and 50 p is Rs. 9.80. The number of 50 p coins is ________.

Choices

Choice (4)Response
a.30
b.32
c.16
d.20

Question 401

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Question

MCQ▾

The value of is ________.

Choices

Choice (4)Response
a.
b.
c.
d.

Question 402

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Question

MCQ▾

Express 0.0084 in scientific notation.

Choices

Choice (4)Response
a.
b.
c.
d.

Question 403

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Question

MCQ▾

The number which is multiplied by to obtain a product equal to is ________.

Choices

Choice (4)Response
a.
b.
c.
d.

Question 404

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Question

MCQ▾

Choices

Choice (4)Response
a.
b.
c.
d.

Question 405

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Question

MCQ▾

What is the value of at ?

Choices

Choice (4)Response
a.0
b.ac
c.ab
d.

Question 406

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Question

MCQ▾

When a number is reduced by 12, it becomes 20 % of itself. Find the number.

Choices

Choice (4)Response
a.15
b.30
c.12
d.25

Question 407

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Question

MCQ▾

The value of is ________.

Choices

Choice (4)Response
a.
b.
c.
d.

Question 408

Edit

Question

MCQ▾

Two numbers are 15 % and 30 % less than a third number respectively. How much % is the second number less than the first?

Choices

Choice (4)Response
a.
b.
c.
d.