Question : Directions: Which sequence of mathematical symbols can replace * in the given equation? 8 * 5 * 9 * 31
Option 1: –, ×, =
Option 2: –, =, ×
Option 3: =, ×, –
Option 4: ×, –, =
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Correct Answer: ×, –, =
Solution : Given: 8 * 5 * 9 * 31
Replace * with the mathematical signs and solve the equations one by one using BODMAS. Let's check the given options – First option: –, ×, = ⇒ 8 – 5 × 9 = 31 Solving the L.H.S. of the equation – = 8 – 45 = –37 ≠ 31 Second option: –, =, × ⇒ 8 – 5 = 9 × 31 Solving the L.H.S. of the equation – = 8 – 5 = 3 Solving the R.H.S. of the equation – = 9 × 31 = 279 ≠ 3 Third option: =, ×, – ⇒ 8 = 5 × 9 – 31 Solving the R.H.S. of the equation – = 45 – 31 = 14 ≠ 8 Fourth option: ×, –, = ⇒ 8 × 5 – 9 = 31 Solving the L.H.S. of the equation – = 40 – 9 = 31
So, only the fourth option satisfies the given equation. Hence, the fourth option is correct.
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Question : Directions: Select the correct combination of the mathematical signs to replace star symbols (*) in the below equation and thereby balance it. 36 * 4 * 9 * 27 * 9 * 150
Option 1: +, ×, –, ÷, =
Option 2: ÷, ×, –, +, =
Option 3: ÷, ×, +, –, =
Option 4: ×, +, –, ÷, =
Question : Directions: Select the correct combination of mathematical signs to replace the * signs and to balance the given equation. 52 * 4 * 38 * 5 * 5 * 0
Option 1: ×, ×, +, =, ×
Option 2: ÷, =, –, ×, +
Option 3: ×, +, ÷, =, –
Option 4: ÷, =, –, ÷, ×
Question : Directions: Select the correct combination of mathematical signs to replace the * signs and to balance the given equation. 23 * 12 * 36 * 2 * 9 * 285
Option 1: –, =, ×, ×, ÷
Option 2: ×, +, ÷, –, =
Option 3: +, +, =, ×, ×
Option 4: =, +, +, ×, –
Question : Directions: Choose the correct sequence of signs for balancing the following equation. 8 _ 4 _ 2 _ 6 _ 3 = 19
Option 1: +, ×, –, ÷
Option 2: ÷, +, –, ×
Option 3: ×, ÷, –, +
Option 4: ×, ÷, +, –
Question : Directions: Which two symbols from amongst the given options should be interchanged to make the given equation correct? (35 – 2) × 3 = (56 × 8 ÷ 3 + 100) × 11
Option 1: ÷ and +
Option 2: × and ÷
Option 3: + and –
Option 4: × and –
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