IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 511 - 516 of 968

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Question number: 511

» Everyday Mathematics

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MCQ▾

Question

Sumit has 27 small cubes of . He wants to arrange all of them in a cuboidal shape, such that the surface area will be minim um. What is the diagonal of this larger cuboid?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 512

» Everyday Mathematics

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MCQ▾

Question

Five years ago, a father was four times as old as his son. 8 years later, father’s age will be exceeding his son’s age by 12 years. The ratio of the present ages of father and son is ________

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 513

» Everyday Mathematics

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MCQ▾

Question

5 bells commence tolling together and toll at intervals of 3,6, 9,12 and 15 seconds respectively. In 12 minutes, how many times do they toll together?

Choices

Choice (4) Response

a.

7

b.

4

c.

6

d.

5

Question number: 514

» Everyday Mathematics

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MCQ▾

Question

The present ages of A, B and C are in proportions . Eight years ago, the sum of their ages was 76. What are their present ages (in years)?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 515

» Everyday Mathematics

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MCQ▾

Question

Kamla got married 6 years ago. Today her age is times her age at the time of marriage. Her son’s age is times her age. Her son’s age is ________

Choices

Choice (4) Response

a.

3 years

b.

2 years

c.

5 years

d.

4 years

Question number: 516

» Everyday Mathematics

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MCQ▾

Question

2 men and 7 boys can do a piece of work in 14 day, 3 men and 8 boys can do the same in 11 days. 8 men and 6 boys can do 3 times the amount of this work in ________

Choices

Choice (4) Response

a.

18 days

b.

21 days

c.

36 days

d.

24 days