What appro×imate value should come in the place of ‘?’ in the following questions.

? × 12 × 3/4 + 120 = 786

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RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 2)
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  1. 65
  2. 74
  3. 78
  4. 56
  5. 60

Answer (Detailed Solution Below)

Option 2 : 74
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Detailed Solution

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Calculation:

? × 12 × 3/4 + 120 = 786

First, subtract 120 from both sides:

? × 12 × 3/4 = 786 - 120

? × 12 × 3/4 = 666

Now, simplify the left side:

? × (12 × 3/4) = 666

? × 9 = 666

Now, divide both sides by 9:

? = 666 ÷ 9

? = 74

∴ The value of '?' is 74.

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