A) 19
B) 23
C) 25
D) 31
Correct Answer: D
Solution :
In fig (A), and \[6+8+5\text{ }+7=26\] In fig\[\left( B \right),\text{ }32=9,52=25,42=16,92=81\]and \[3+5+4\text{ }+9=21\] In fig (C), \[{{5}^{2}}=25,{{12}^{2}}=144,{{6}^{2}}=36,{{8}^{2}}=64.\] So, missing number\[=5+12+6+8=31.\]
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