Sum of numbers in upper half of the circle = ? + 4 + 5 + 6 = ? + 15
Upper half = Lower half
30 = ? + 15
? = 30 - 15
? = 15.
Threfore, 15 is the answer.
and 5 x 7 x 4 = 140
Therefore, 4 x 4 x ? = 96
? = (96/16) = 6.
(31 x 2 - 6) = 56
and (45 x 2 - 9) = 81
(5 x 9) + 1 = 46
Similarly, (7 x 11) + 1 = 78.
(7 x 6) + 2 = 44
(7 x 5) + 2 = 37.
and (11 + 16 + 10 + 13)/2 = 25
Therefore, (15 + ? + 12 + 10)/2 = 22
Hence 37 + ? = 44
? = 44 - 37
? = 7.
How the number is obtained?
2 + 4 = 6
5 + 9 = 14
Similarly,
3 + 5 = 8
Therefore, the answer is K8.
and 789 - 543 = 246
Similarly, 863 - 241 = 622.
10 - 4 = 6
18 - 10 = 8
18 - 4 = 14
For second triangle,
14 - 8 = 6
22 - 14 = 8
22 - 8 = 14
For third triangle,
11 - 5 = 6
15 - 11 = 4
15 - 5 = 10.
From II row, 2 + (2/3) = 8/3
From III row, 3 + ? = 19/5
? = (19/5) - 3
? = (4/5).
79 - (38 + 4) = 37
Therefore, 67 - (16 + X) = 42
X = 9
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