Multiple choice What is the value of the expression [2.3 + 1.2 - { 4.2 - ( 1.36 + 2.21 )}]? 4.13 2.87 4.13 2.87 None of these Reveal answer Fill a bubble to check yourself B Correct answer Explanation [2.3 + 1.2 - {4.2 - (1.36 + 2.21)}] or [3.5 - {4.2 - (3.57)}] or [3.5 - {4.2 - 3.57 }] or [3.5 - 0.63] or 2.87