Question
Download Solution PDFWhich of the following sets of signs should be used to replace * in the following?
60 * 5 * 8 = 2 * 8 * 4
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven: 60 * 5 * 8 = 2 * 8 * 4
According to the question, after interchanging the signs:
Option 1) + × ÷ -
60 * 5 * 8 = 2 * 8 * 4 ⇒ 60 + 5 × 8 = 2 ÷ 8 - 4
⇒ 60 + 5 × 8 = 2 ÷ 8 - 4
⇒ 60 + 40 = 0.25 - 4
⇒ 100 ≠ -3.75 (LHS ≠ RHS)
Option 2) ÷ + × +
60 * 5 * 8 = 2 * 8 * 4 ⇒ 60 ÷ 5 + 8 = 2 × 8 + 4
⇒ 60 ÷ 5 + 8 = 2 × 8 + 4
⇒ 12 + 8 = 16 + 4
⇒ 20 = 20 (LHS = RHS)
Option 3) + × × +
60 * 5 * 8 = 2 * 8 * 4 ⇒ 60 + 5 × 8 = 2 × 8 + 4
⇒ 60 + 5 × 8 = 2 × 8 + 4
⇒ 60 + 40 = 16 + 4
⇒ 40 ≠ 20 (LHS ≠ RHS)
Option 4) × - ÷ +
60 * 5 * 8 = 2 * 8 * 4 ⇒ 60 × 5 - 8 = 2 ÷ 8 + 4
⇒ 60 × 5 - 8 = 2 ÷ 8 + 4
⇒ 300 - 8 = 0.25 + 4
⇒ 292 ≠ 4.25 (LHS ≠ RHS)
Hence, "Option 2" is the correct answer.
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