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If Mathistan '+' means Division; '×' means Addition; '⋅' means Multiplication and '÷' means Subtraction. They follow the BODMAS rules. What is the value of the e×pression 15 + 5 - 5 ÷ 4 × 1 in Mathistan?

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JKSSB SI Official Paper (Held On: 12 Dec 2022 Shift 2)
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  1. 10
  2. 12
  3. 14
  4. 19

Answer (Detailed Solution Below)

Option 2 : 12
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Detailed Solution

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BODMAS

Decoding signs:

Sign + × - ÷
Stands For ÷ + × -

Given: 15 + 5 - 5 ÷ 4 × 1 

15 + 5 - 5 ÷ 4 × 1 ⇒ 15 ÷ 5 × 5 - 4 + 1

⇒ 15 ÷ 5 × 5 - 4 + 1

⇒ 3 × 5 - 4 + 1

⇒ 15 + 1 - 4

⇒ 16 - 4

⇒ 12

Hence, "Option 2" is the correct answer.

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