Only in option (c) the last numbers (i.e., both end numbers are not same).
8(3 + 5) -------- 15(3 x 5)
25 = (5)2 ----------- 36 = (6)2
49 = (7)2 ------------ 64 = (8)2
81 = (9)2 ----------- 100 = (10)2
Except option (c) all are number i.e.,
EIGHT → GHIET; VEENS → SEVEN etc.
Except option (b) rest all has vowel
Except 44 - 31, the difference of the remaining pairs are perfect squares.
104 :78 = 104/26 : 78/26
=4 : 3
64 : 48 = 64/16 : 48/16
= 4 :3
80 : 60 = 80/20 : 60/20
= 4 : 3
But, 96 :80 = 96/16 : 80/16
= 6 : 5
The odd is 96 : 80 because its ratio is 6 : 5 but rest of ratio is 4 : 3.
President is the only person, who does not represent any house or parliament.
Except option (c) rest all are perfect squares.
Except option (c) all are mammal whereas scarab is an insect.
All number are not a perfect square except option (d), which is a perfect square of 143 = 196.
The given series is in pattern + 4, + 8, + 12, + 16, ...............
So, the missing term = 41 + 20 = 61
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