Select the correct combination of mathematical signs that can sequentially replace the * signs and make the equation correct.
68 * 138 * 23 * 54 * 20
Answer & explanation
Correct answer: option 3
From the option (3)
68 + 138 ÷ 23 – 54 = 20
68 + 6 – 54 = 20
20 = 20