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Question

If $$\sqcap $$ stands for +
$$\sqsubset$$ stands for -
$$\sqsupset $$ stands for $$\times$$
$$\sqcup$$ stands for $$\div$$
$$||$$ sands for $$=$$
$$\leftarrow$$ stands for <
$$\rightarrow$$ stands for >
Which one of the following expression is true?


A
(102)(2||2)(103)
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B
(208)(4)||(41)
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C
(124)(5) (10 20)
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D
(102)(22)(102)
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E
(193)(31)(5||20)
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Solution

The correct option is E $$(10 \sqcap 2) \sqsupset (2 \sqcup 2) \rightarrow (10 \sqcup 2)$$
Substituting as given in question,
option A
$$(10 + 2) \times 2 =  2 < 10 \div 3$$  False
option B
$$(20 - 8) \div (4 -) = (4 + 1)$$ False because $$12 \div -4 \neq 5$$
option C
$$(12 - 4) \times (5 \times) >$$ (10 $$\div$$ 20) False because $$8 \times 5 \neq 10\div 20$$
option D
$$(10 + 2) \times (2 \div 2) > (10 \div 2)$$ True because $$12 \times 1 > 10\div 5$$
option E
$$(19 \div 3) - (3 + 1) + 5 = 20$$ False
so option  D 

Logical Reasoning

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