5, 8, 20, 34, 76, 142, ? - What will come in the place of question mark?

Question:

 

5, 8, 20, 34, 76, 142, ?

 

Options:

 

(a) 284

 

(b) 302

    

(c) 296

 

(d) 272

 

Solution:

 

5×2-2=8

 

8×2+4=20

 

20×2-6=34

 

34×2+8=76

 

76×2-10=142

 

142×2+12=296