SOLUTION: We define the operation “o” as follows : a o b = a x b + a - b. What is the value of the expression ( 2 o 5 ) o ( 5 o 2 ) ?
(A) 81 (B) 113 (C) 117 (D) 169 (E) None of these
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-> SOLUTION: We define the operation “o” as follows : a o b = a x b + a - b. What is the value of the expression ( 2 o 5 ) o ( 5 o 2 ) ?
(A) 81 (B) 113 (C) 117 (D) 169 (E) None of these
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Question 314836: We define the operation “o” as follows : a o b = a x b + a - b. What is the value of the expression ( 2 o 5 ) o ( 5 o 2 ) ?
(A) 81 (B) 113 (C) 117 (D) 169 (E) None of these Answer by malaydassharma(59) (Show Source):
You can put this solution on YOUR website! a o b = a x b + a - b
2 o 5 = 2X5 + 2 - 5 = 7
5 o 2 = 5X2 + 5 - 2 = 13
Hence,
( 2 o 5 ) o ( 5 o 2 )= 7 o 13
= 7X13+7-13=85
