it is in the form, 210 = (15)2 - 15 and 380 = (15 + 5)2 - (15 +5), 182 = 132 + 13 and 342 = 182 + 18
the pattern is ... babc
All are rodents or rat family, except cat.
Barrow' is man-driven cart whereas others are usual.
Except option (d), all letters in pairs having difference of four.
The relationship is x : (x2 - 9).
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.
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