IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 573 - 578 of 968
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Question 573
Question
MCQ▾A train 200 meters long moving at a speed of 70 km/hr crosses a train 220 meters long coming from opposite direction in 10 seconds. The speed of second train is ________
Choices
Choice (4) | Response | |
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a. | ||
b. | ||
c. | ||
d. |
Question 574
Question
MCQ▾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 575
Question
MCQ▾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 576
Question
MCQ▾While selling a watch, a shopkeeper gives a discount of . If he gives a discount of , he earns ₹ 15 less as profit. The marked price of the watch is ________
Choices
Choice (4) | Response | |
---|---|---|
a. | ₹ 712.50 | |
b. | ₹ 787.50 | |
c. | ₹ 750 | |
d. | ₹ 697.50 |
Question 577
Question
MCQ▾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 578
Question
MCQ▾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 | |
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a. | ||
b. | ||
c. | ||
d. |