Find out the wrong number in the series 196, 169, 144, 121, 100, 80, 64
Answer: D
Numbers must be (14)⊃2;, (13)⊃2;, (12)⊃2;, (11)⊃2;, (10)⊃2;, (9)⊃2;, (8)⊃2;.
So, 80 is wrong.