Question : Directions: Select the correct combination of mathematical signs that can sequentially replace * signs and balance the given equation. 12 * 70 * 5 * 5 * 5 * 11 * 2
Option 1: +, –, ×, =, ×, +
Option 2: ×, +, +, –, ×, =
Option 3: ×, =, ×, ×, +, –
Option 4: ×, +, –, ×, =, ×
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Correct Answer: +, –, ×, =, ×, +
Solution : Given: 12 * 70 * 5 * 5 * 5 * 11 * 2
Let's check the options – First option: +, –, ×, =, ×, + ⇒ 12 + 70 – 5 × 5 = 5 × 11 + 2 L.H.S.→12 + 70 – 5 × 5 = 12 + 70 – 25 = 82 – 25 = 57 R.H.S.→5 × 11 + 2 = 55 + 2 = 57 L.H.S. = R.H.S. Second option: ×, +, +, –, ×, = ⇒ 12 × 70 + 5 + 5 – 5 × 11 = 2 L.H.S.→12 × 70 + 5 + 5 – 5 × 11 = 840 + 5 + 5 – 55 = 850 – 55 = 795 R.H.S.→2 L.H.S. ≠ R.H.S. Third option: ×, =, ×, ×, +, – ⇒ 12 × 70 = 5 × 5 × 5 + 11 – 2 L.H.S.→12 × 70 = 840 R.H.S.→5 × 5 × 5 + 11 – 2 = 125 + 11 – 2 = 136 – 2 = 134 L.H.S. ≠ R.H.S. Fourth option: ×, +, –, ×, =, × ⇒ 12 × 70 + 5 – 5 × 5 = 11 × 2 L.H.S.→12 × 70 + 5 – 5 × 5 = 840 + 5 – 25 = 845 – 25 = 820 R.H.S.→11 × 2 = 22 L.H.S. ≠ R.H.S.
So, only the first option satisfies the equation. Hence, the first option is correct.
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Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation. 59 * 12 * 6 * 24 * 2 * 105
Option 1: –, +, –, +, =
Option 2: ×, –, +, ×, =
Option 3: +, ×, +, –, =
Option 4: –, ÷, +, ×, =
Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation. 20 * 2 * 50 * 5 * 115
Option 1: –, ×, =, +
Option 2: +, ×, =, –
Option 3: +, ×, –, =
Option 4: –, ×, +, =
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: ÷, ×, –, –
Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation. 42 * 7 * 5 * 5 * 40 * 5
Option 1: ÷, ×, +, =, –
Option 2: ÷, ×, =, +, +
Option 3: ÷, ×, –, =, ×
Option 4: +, =, ÷, ×, +
Question : Directions: Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation. 18 * 3 * 12 * 9 * 3 * 111
Option 1: ÷, +, ×, –, =
Option 2: ×, +, ÷, –, =
Option 3: ×, –, ×, +, =
Option 4: ×, +, ×, –, =
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