Which two signs and two numbers should be interchanged to make the given equation correct?
$$45 - 87 \times 20 \div 5 + 29 = 50$$
Option (a)Ā $$20\ and\ 29,\div\ and\ \times$$
$$45-87\div29\times5+20=50$$
$$45-3\times5+20=50$$
45-15+20=50
30+20=50
50=50
The given equation is satisfied. So this will be the correct answer.
Option (b)Ā $$29\ and\ 45,+\ and\ \div$$
$$29-87\times20+5\div45=50$$
$$29-87\times20+\frac{1}{9}=50$$
The given equation is not satisfied. Because it will give value in the fraction. So this will not be the correct answer.
Option (c)Ā $$20\ and\ 29,\div\ and\ +$$
$$45-87\times29+5\div20=50$$
$$45-87\times29+\frac{1}{4}=50$$
The given equation is not satisfied. Because it will give value in the fraction. So this will not be the correct answer.
Option (d)Ā $$45\ and\ 5,\ \times\ and\ -$$
$$5\times87-20\div45+29=50$$
$$5\times87-\frac{4}{9}+29=50$$
The given equation is not satisfied. Because it will give value in the fraction. So this will not be the correct answer.
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