IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 273 - 277 of 1040

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Question number: 273

» Quadrilaterals and Practical Geometry

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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 which of the following is a wrong step?

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

(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.

S

b.

P

c.

R

d.

Q

Question number: 274

» Comparing Quantities

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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.

360

c.

200

d.

400

Question number: 275

» Comparing Quantities

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MCQ▾

Question

When the price of a product was decreased by 10%, the number sold increased by 40%, what was the increase on the total revenue?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 276

» Quadrilaterals and Practical Geometry

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MCQ▾

Question

Four angles of a quadrilateral are in the ratio 2: 4: 6: 8. The greatest angle is________.

Choices

Choice (4)Response

a.

110

b.

150

c.

144

d.

120

Question number: 277

» Comparing Quantities

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MCQ▾

Question

A book was sold for Rs. 25.50 with a profit of 10%. If it were sold for Rs. 25.75, then what would have been the percentage of profit or loss?

Choices

Choice (4)Response

a.

Loss, 10%

b.

Loss, 12%

c.

Profit, 11.04%

d.

profit, 11%

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