Question : Directions: In the following question you have to identify the correct response from the given premises stated according to the following symbols:
Select the set of symbols that can be fitted correctly in the equation.
5....3....8....4....2 = 21
Option 1: +, ×, +, ÷
Option 2: ×, +, –, ÷
Option 3: –, ×, +, ÷
Option 4: +, ×, –, ÷
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Correct Answer: ×, +, –, ÷
Solution :
Given:
5....3....8....4....2 = 21
Let's check the options –
First option:
+, ×, +, ÷
⇒ 5 + 3 × 8 + 4 ÷ 2 = 21
On solving the L.H.S. of the equation, we get –
= 5 + 3 × 8 + 2
= 5 + 24 + 2
= 31 ≠ 21
Second option:
×, +, –, ÷
⇒ 5 × 3 + 8 – 4 ÷ 2 = 21
On solving the L.H.S. of the equation, we get –
= 5 × 3 + 8 – 2
= 15 + 8 – 2
= 23 – 2
= 21
Third option:
–, ×, +, ÷
⇒ 5 – 3 × 8 + 4 ÷ 2 = 21
On solving the L.H.S. of the equation, we get –
= 5 – 3 × 8 + 2
= 5 – 24 + 2
= –17 ≠ 21
Fourth option:
+, ×, –, ÷
⇒ 5 + 3 × 8 – 4 ÷ 2 = 21
On solving the L.H.S. of the equation, we get –
= 5 + 3 × 8 – 2
= 5 + 24 – 2
= 27 ≠ 21
Hence, the second option is correct.
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