Simplify: 245 - [135 - {84 ÷ 4 of 3 - (11 - 12 ÷ 3)}]

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Answer: (A) 110

Explanation

'4 of 3' = 12, so 84 ÷ 12 = 7, and 11 − 12 ÷ 3 = 7. The curly bracket is 7 − 7 = 0, the square bracket 135, and 245 − 135 = 110.