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
? ? ? ?




Similar Riddles

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

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B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

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Two old friends, Jack and Bill, meet after a long time.

Three kids
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Jack: Oh, now I get it.

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Find the mistake in the below maths equations

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It's pretty hard to give up.
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ENEMY = 2 * LINK
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A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

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If Rajina's daughter is my daughter's mom, who am I to Rajina?

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Amazing Facts

Gamers

In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.