IMO- Mathematics Olympiad Class 8: Questions 270 - 274 of 1029

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Question number: 270

» Quadrilaterals and Practical Geometry

MCQ▾

Question

The number of sides of a regular polygon whose each exterior angle has a measure of 60° is________.

Choices

Choice (4) Response

a.

10

b.

8

c.

3

d.

6

Question number: 271

» Comparing Quantities

MCQ▾

Question

What sum lent out at C. I. will amount to Rs. 900 in 2 years at 20 % p. a. interest?

Choices

Choice (4) Response

a.

625 Rs.

b.

700 Rs.

c.

550 Rs.

d.

600 Rs.

Question number: 272

» Comparing Quantities

MCQ▾

Question

Rice is bought at Rs. 30.50 per kg and sold at Rs. 32.00 per kg. The gain percent is________.

Choices

Choice (4) Response

a.

4.70%

b.

3.12%

c.

4.91%

d.

3.00%

Question number: 273

» Quadrilaterals and Practical Geometry

MCQ▾

Question

Given below steps of construct a quadrilateral ABCD where AB = 5.2 cm, BC = 4.0 cm, CD = 4.2 cm, AD = 3.3 cm and A=65°. which of the following is a wrong step?

(P) Step 1: Draw AB = 5.2cm and construct BAC=65°

(Q) Step 2: With A as center and radius AD = 3.3 cm, cut off AD = 3.3 cm along AX.

(R) Step 3: Join BD. With D as center and radius DC = 4.2 cm, draw an arc.

(S) Step 4: With B as center and radius BC = 4.0 cm, draw an arc to cut the arc drawn in above step at C. Join BC, CD to obtain the required quadrilateral ABCD.

Choices

Choice (4) Response

a.

R

b.

S

c.

P

d.

Q

Question number: 274

» Comparing Quantities

MCQ▾

Question

A bag contains 50p, 25p, 10p coins in the ratio 1: 3: 2, amounting to Rs. 87. Find the total number of coins.

Choices

Choice (4) Response

a.

100

b.

400

c.

200

d.

360

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