Question : Direction: Select the correct combination of mathematical signs to replace * signs and to balance the following equation.
13 * 12 * 5 * 4
Option 1: =, –, +
Option 2: =, +, –
Option 3: +, –, =
Option 4: –, =, +
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Correct Answer: =, +, –
Solution : Given: 13 * 12 * 5 * 4
Let's check the options —
First option: =, –, + On replacing → 13 = 12 – 5 + 4 ⇒ 13 = 12 – 5 + 4 ⇒ 13 = 16 – 5 ⇒ 13 ≠ 11
Second option: =, +, – On replacing → 13 = 12 + 5 – 4 ⇒ 13 = 12 + 5 – 4 ⇒ 13 = 17 – 4 ⇒ 13 = 13
Third option: +, –, = On replacing → 13 + 12 – 5 = 4 ⇒ 13 + 12 – 5 = 4 ⇒ 25 – 5 = 4 ⇒ 20 ≠ 4
Fourth option: –, =, + On replacing → 13 – 12 = 5 + 4 ⇒ 13 – 12 = 5 + 4 ⇒ 1 ≠ 9
Hence, the second option is correct.
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Question : Direction: Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
15 * 24 * 3 * 6 * 17
Option 1: –, ÷, +, =
Option 2: +, ÷, –, =
Option 3: +, ×, =, ÷
Option 4: –, ×, =, +
Question : Directions: Select the correct combination of mathematical signs to replace * signs and to balance the following equation. 48 * 4 * 6 * 3 * 30
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. 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 balance the given equation. 7 * 5 * 4 * 2 * 3 * 7
Option 1: ÷, –, +, ×, =
Option 2: +, –, ÷, –, =
Option 3: ÷, +, ÷, +, =
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