Question 23
Fill in '+' or '-' sign in between these numbers so that they give the correct answer.
$$1 2^3 3^3 1 4^3 = 31$$
Solution
Option A : $$1\ +\ 2^{3\ }+\ 3^{3\ }\ -1\ -4^3=-29$$
Option B: $$1\ +\ 2^{3\ }+\ 3^{3\ }\ +1\ -4^3=-27$$
Option C: $$1\ -\ 2^{3\ }-3^{3\ }\ +1\ +4^3=31$$
Option D: $$1\ -\ 2^{3\ }-3^{3\ }\ -1\ +4^3=29$$
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