A) 36
B) 30
C) 49
D) 42
Correct Answer: D
Solution :
Middle number is obtained by adding 4 five times. 4+4+4-»-4+4=20 Middle number is obtained by adding 7 two times. 7 + 7 = 14 Similarly, Middle number is obtained by adding 6 seven times. 6+6+6+6+6+6+6=42You need to login to perform this action.
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