This is very interesting as well as challenging Math Brain Teaser for Teens. This Math Brain Teaser will test not only your knowledge of Mathematics but also your lateral thinking ability. Lets see if you can crack this challenging Math Brain Teaser and tell the number which comes next in the given series?

Answer of this "Challenging Math Brain Teaser", can be viewed by clicking on answer button. Please do give your best try before looking at the answer.

the answer is 7

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