Everyday Mathematics (IMO- Mathematics Olympiad Class 10): Questions 6 - 10 of 67

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Question number: 6

» Everyday Mathematics

MCQ▾

Question

A boy was asked to multiply a given number by (817) . Instead, he divided the given number by (817) and got the result 225 more than what he should have got if he had multiplied the number by (817) . The given number was ________.

Choices

Choice (4) Response
a.

136

b.

64

c.

8

d.

17

Question number: 7

» Everyday Mathematics

MCQ▾

Question

Sumit has 27 small cubes of 1cm3 . 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.

3cm

b.

34cm

c.

35cm

d.

33cm

Question number: 8

» Everyday Mathematics

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.

4:1

b.

7:2

c.

1:4

d.

6:5

Question number: 9

» Everyday Mathematics

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.

5

b.

6

c.

7

d.

4

Question number: 10

» Everyday Mathematics

MCQ▾

Question

The present ages of A, B and C are in proportions 9:8:3 . Eight years ago, the sum of their ages was 76. What are their present ages (in years)?

Choices

Choice (4) Response
a.

45,40,15

b.

16,32,56

c.

16,40,59

d.

16,28,36

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