IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 215 - 224 of 1042

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Question 215

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Question

MCQ▾

The value of is________.

Choices

Choice (4)Response
a.14
b.15
c.12
d.10

Question 216

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Question

MCQ▾

The value of is ________.

Choices

Choice (4)Response
a.8.5
b.2.5
c.4.00
d.7.5

Question 217

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Question

MCQ▾

By what least number must 648 be multiplied to make it perfect cube?

Choices

Choice (4)Response
a.10
b.4
c.5
d.9

Question 218

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Question

MCQ▾

In the number a4b, a is the smallest two digit perfect cube and a’s unit digit exceeds b by 3. then find the sum of the number and its cube root is________.

Choices

Choice (4)Response
a.2713
b.2754
c.2758
d.2750

Question 219

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Question

MCQ▾

The smallest number by which 225 must be multiplied so that the product is a perfect cube is________.

Choices

Choice (4)Response
a.10
b.15
c.11
d.9

Question 220

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Question

MCQ▾

The volume of a cube whose surface area is , is________.

Choices

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

Question 221

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Question

MCQ▾

If , then is equal to________.

Choices

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

Question 222

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Question

MCQ▾

=

Choices

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

Question 223

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Question

MCQ▾

If , then is equal to________.

Choices

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

Question 224

Edit

Question

MCQ▾

By what least number must 3125 be multiplied to make it perfect cube?

Choices

Choice (4)Response
a.5
b.4
c.10
d.25