A) 7
B) 9
C) 11
D) Cannot be determined
Correct Answer: A
Solution :
A + B + C = 13 C + D + E = 13 E + F + G = 13 G + H + I = 13 Adding these equations, (A +B +C + D + E + F + G + H + I) + (C + D + E) =52 (1 + 2 + 3 + 4 + 5 ++6 + 7 + 8 + 9) + (C + D + E) = 52 C + D + E = 52 - 45 = 7You need to login to perform this action.
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