question_answer1) Which one of the following is not correct?
question_answer2) [{(34+17) - 20}+21] ? 20 =
question_answer3) \[45+3\times 2\] or \[5-(16+4)-8\div 4=?\]
question_answer4) The value of 6 + 2[3 + 5 {28 ? 12 (12 - 10)}] = ?
question_answer6) \[2{{x}^{2}}+3x+1\] by \[(x+1)\]?
question_answer7) Simplify the following \[6{{x}^{2}}-4x\div x\].
question_answer11) Find the division of the following fractions: \[\frac{8}{9}\div \frac{3}{27}\].
question_answer13) The product of the following fractions, 234.567 and 123.7 is?
question_answer15) The area and perimeter of the given figure is 
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