The series is ( + 7 x 1), (+ 6 x 2), (+ 5 x 3), (+ 4 x 4), (+ 3 x 5), (+ 2 x 6).
The wrong number is 32;
(9 + 6) x 2 = 15 x 2 = 30
63/3 = 21
27/3 = 9
F
Except option (c) rest all are perfect squares.
Except, `Plate', all two in number.
All other terms are used to denote the size.
15/20 x 5/4 x 2/3 x 8/5 = 1
All Except `Raft' are down by animal.
Only '729' is a perfect cube.
This is the only prime number in the group.
All others are soild metals.
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