Which two signs should be interchanged to make the following equation correct?
$$7 \times 2 + 5 - 16 \div 4 = 13$$
If you interchange $$\times\ \ and\ \ +$$, the equation will become,
$$7+2\times\ 5-16\div4$$
$$=7+2\times\ 5-4$$
$$=7+10-4$$
$$=17-4$$
$$=13.$$
Option A is correct.
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