Select the correct combination of mathematical signs to replace ‘A’ and balance the following equation. 52 A 12 A 15 A 3 A 6 A 5 A 15
̶ , +, ÷, =, ×, +
Let's check each option,
1) ̶ , +, ÷, ×, =, +
→ 52 - 12 + 15 ÷ 3× 6 = 5 + 15
→ 52 - 12 + 5 × 6 = 5 + 15
→ 52 - 12 + 30 = 5 + 15
→ 82 - 12 = 20
→ 70 ≠ 20
→ LHS ≠ RHS
2) -, +, ÷, =, ×, +
→ 52 - 12 + 15 ÷ 3 = 6 × 5 + 15
→ 52 - 12 + 5 = 6 × 5 + 15
→ 52 - 12 + 5 = 30 + 15
→ 57 - 12 = 45
→ 45 = 45
→ LHS = RHS ⇒ Satisfies the equation
3) ̶ , +, ×, =, ÷, +
→ 52 - 12 + 15 × 3 = 6 ÷ 5 + 15
→ 52 - 12 + 15 × 3 = 6/5 + 15
→ 52 - 12 + 45 = 6/5 + 15
→ 97 - 12 = 81/5
→ 85 ≠ 81/5
→ LHS ≠ RHS
4) +, ̶ , ÷, ×, =, +
→ 52 + 12 - 15 ÷ 3× 6 = 5 + 15
→ 52 + 12 - 5 × 6 = 5 + 15
→ 52 + 12 - 30 = 5 + 15
→ 64 - 30 = 20
→ 34 ≠ 20
→ LHS ≠ RHS
Hence, the correct answer is " -, +, ÷, =, ×, +".
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Important Questions from Logical Puzzle
Seven persons P, Q, R, S, T, U and V like different watches namely W1, W2, W3, W4, W5, W6 and W7 (not necessarily in the same order). P and R do not like odd numbered watch. T likes W5. U does not like W2 or W3 or W6 or W7. P likes prime numbered watch. Q likes W4. S likes W2 or W7. Which of the following statement(s) is/are correct ?
I. S likes W7.
II. R likes W2.
III. U likes W1.
IV. V likes W3.
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