IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 273 - 277 of 1042

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Question 273

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Question

MCQ▾

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 274

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Question

MCQ▾

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 275

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Question

MCQ▾

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 276

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Question

MCQ▾

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 277

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Question

MCQ▾

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%