Question : Directions: Select the correct combination of mathematical signs to replace the * signs and to balance the given equation. 221 * 17 * 3 * 60 * 7 * 10
Option 1: ÷, –, +, =, ×
Option 2: +, =, ×, ÷, –
Option 3: ÷, ×, +, =, +
Option 4: +, =, ×, +, ×
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Correct Answer: ÷, –, +, =, ×
Solution : Given: 221 * 17 * 3 * 60 * 7 * 10
Replace * with the mathematical signs and solve the equations one by one using the BODMAS. Let's check the given options – First option: ÷, –, +, =, × ⇒ 221 ÷ 17 – 3 + 60 = 7 × 10 Solving the L.H.S. and R.H.S. of the equation – ⇒ 13 – 3 + 60 = 70 ⇒ 70 = 70 Second option: +, =, ×, ÷, – ⇒ 221 + 17 = 3 × 60 ÷ 7 – 10 Solving the L.H.S. and R.H.S. of the equation – ⇒ 238 = 25.71 – 10 ⇒ 238 ≠ 15.71 Third option: ÷, ×, +, =, + ⇒ 221 ÷ 17 × 3 + 60 = 7 + 10 Solving the L.H.S. and R.H.S. of the equation – ⇒ 39 + 60 = 17 ⇒ 99 ≠ 17 Fourth option: +, =, ×, +, × ⇒ 221 + 17 = 3 × 60 + 7 × 10 Solving the L.H.S. and R.H.S. of the equation – ⇒ 238 = 180 + 70 ⇒ 238 ≠ 250
So, only the first option satisfies the given equation. Hence, the first option is correct.
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