Number on the Bottom

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?




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Joseph organises an exotic office New year party at the beach to his important fellow employees.

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1. Joseph

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On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?

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There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
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What is the total distance covered by the bug?

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