Rules
(i) (Odd number) x (Composite odd number)
(ii) (Even number) + (Odd number)
(iii) (Even number) ? (Perfect square number), then (Perfect square number) - (Even number)
(iv) (Odd number) ÷ (Prime odd number)
(v) (Odd number) - (Even number)
Solution
1st Row 7 21 3 ? 7 x 21 = 147 [rule (i)]
? 147 ÷ 3 = 49 = d [rule (iv)]
2nd Row d 7 33 ? 49 7 33
? 49 ÷ 7 = 7 [rule (iv)]
? 7 x 33 = 231 [rule (i)]
? Resultant of second row = 231
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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