Question : Direction: Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
15 * 24 * 3 * 6 * 17
Option 1: –, ÷, +, =
Option 2: +, ÷, –, =
Option 3: +, ×, =, ÷
Option 4: –, ×, =, +
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Correct Answer: +, ÷, –, =
Solution :
Given:
15 * 24 * 3 * 6 * 17
Let's check the options —
First option:
–, ÷, +, =
On replacing →
15 – 24 ÷ 3 + 6 = 17
⇒ 15 – 24 ÷ 3 + 6 = 17
⇒ 15 – 8 + 6 = 17
⇒ 21 – 3 = 17
⇒ 18 ≠ 17
Second option:
+, ÷, –, =
On replacing → 15 + 24 ÷ 3 – 6 = 17
⇒ 15 + 24 ÷ 3 – 6 = 17
⇒ 15 + 8 – 6 = 17
⇒ 23 – 6 = 17
⇒ 17 = 17
Third option:
+, ×, =, ÷
On replacing → 15 + 24 × 3 = 6 ÷ 17
⇒ 15 + 24 × 3 = 6 ÷ 17
⇒ 15 + 72 = 0.35
⇒ 87 ≠ 0.35
Fourth option:
–, ×, =, +
On replacing → 15 – 24 × 3 = 6 + 17
⇒ 15 – 24 × 3 = 6 + 17
⇒ 15 – 72 = 23
⇒ –57 ≠ 23
Hence, the second option is correct.
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