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Incorrect

Explanation

AW – And Why. What Are The Next Two Letters In The Following Series And Why.

Solve this puzzle

7 is changed to 13. 11 is changed to 21. Then what does 16 become?

32 31 20 17

NASA: Mars Colonization is No Longer a Futuristic Idea

Mars colonization may happen sooner than you might think – NASA scientists are on the verge of a breakthrough that would open an era of space colonization! NASA has developed a plan that would make it possible to restore the atmosphere of Mars.