Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation. 35 * 5 * 7 * 2 * 19 = 42
Option 1: ×, ÷, –, +
Option 2: ÷, ×, +, +
Option 3: +, –, +, –
Option 4: ÷, ×, –, –
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Correct Answer: ×, ÷, –, +
Solution : Given: 35 * 5 * 7 * 2 * 19 = 42
Replace * with the mathematical signs and solve the equations one by one using BODMAS. Let's check the given options – First option: ×, ÷, –, + ⇒ 35 × 5 ÷ 7 – 2 + 19 = 42 Solving the L.H.S. of the equation – = 25 – 2 + 19 = 42 Second option: ÷, ×, +, + ⇒ 35 ÷ 5 × 7 + 2 + 19 = 42 Solving the L.H.S. of the equation – = 49 + 2 + 19 = 70 ≠ 42 Third option: +, –, +, – ⇒ 35 + 5 – 7 + 2 – 19 = 42 Solving the L.H.S. of the equation – = 40 – 7 + 2 – 19 = 16 ≠ 42 Fourth option: ÷, ×, –, – ⇒ 35 ÷ 5 × 7 – 2 – 19 = 42 Solving the L.H.S. of the equation – = 49 – 2 – 19 = 28 ≠ 42
So, only the first option satisfies the given equation. Hence, the first option is correct.
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