# IQ Quiz 50

1. If air is called dust; dust is called cloud; cloud is called rain; rain is called white; white is called blue and blue is called green, then what is the color of the clear sky?

2. The difference between the simple and the compound interest earned on a sum of money at the end of the second year at the rate of 4% per annum is \$16. What is the principal?

3. The mean proportion of 0.02 and 0.32 is

4. Find out the wrong number : 508, 252, 124, 60, 28, 14, 4

5. A boat takes 9 hrs and 3 hrs to travel a distance upstream and downstream respectively. If the speed of the boat is 4 km/hr in still water, then what is the velocity of the stream?

6. Find out the wrong number : 3, 7, 23, 58, 123, 223, 367

7. Twelve men complete a work in 9 days. After they have worked for 6 days, 6 more men join them. How many days will they take to complete the remaining work?

8. Find out the wrong number : 2, 2, 4, 6, 15, 45, 157.5

9. Tom started a business investing \$25000. After 3 months, John joined him with a capital of \$30000. If at the end of the year they make a profit of \$19000, then what will be Tom’s share?

10. 11529 : 72135 :: 152943 : ?

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