IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 574 - 579 of 968

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Question number: 574

» Arithmetic Progressions

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MCQ▾

Question

The arithmetic mean of a number of pair wise distinct prime numbers is 27. Determine the biggest prime among them.

Choices

Choice (4)Response

a.

48

b.

45

c.

47

d.

46

Question number: 575

» Everyday Mathematics

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MCQ▾

Question

A dishonest dealer professes to sell his goods at cost price but he uses a false weight and thus gains . For a kg, he uses a weight of ________

Choices

Choice (4)Response

a.

750 gms

b.

660 gms

c.

860 gms

d.

760 gms

Question number: 576

» Everyday Mathematics

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MCQ▾

Question

While selling a watch, a shopkeeper gives a discount of . If he gives a discount of , he earns Rs. 15 less as profit. The marked price of the watch is ________

Choices

Choice (4)Response

a.

Rs. 712.50

b.

Rs. 787.50

c.

Rs. 750

d.

Rs. 697.50

Question number: 577

» Everyday Mathematics

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MCQ▾

Question

Suraj travels a certain distance at 3 km/hr and reaches 15 min. late. If he travels at 4 km/hr, he reaches 15 min. earlier. The distance he has to travel is ________

Choices

Choice (4)Response

a.

7.2 km

b.

6 km

c.

4.5 km

d.

12 km

Question number: 578

» Everyday Mathematics

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MCQ▾

Question

If P and Q can do a work in 12 days, Q and R in 15 days, while R and P in 20 days, how long would P, Q and R alone take to do the work respectively?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 579

» Everyday Mathematics

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MCQ▾

Question

Walking at five-fourths of his usual speed a man covers a certain distance in five hours than the time he takes to cover the distance at his usual speed. The time taken by him to cover the distance with his usual speed is ________

Choices

Choice (4)Response

a.

23 hours

b.

22 hours

c.

25 hours

d.

26 hours

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