Which two signs should be interchanged to make the given equation correct?
$$15 \div 15 \times 10 - 10 + 5 = 15$$
If we interchange $$\ +\ \ and\ \ -\ $$,
$$15\div15\times\ 10+10-5$$
$$=1\times\ 10+10-5$$
$$=10+10-5$$
$$=20-5$$
$$=15.$$
D is correct choice.
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