Question

If $\cap$ stands for +
$\subset$ stands for -
$\supset$ stands for x
$\cup$ stands for $÷$
|| stands for =
$\to$ stands for >
Which one of the following expression is true?

• A. $(10\cap 2)\supset (2\parallel 2)\leftarrow (10\cup 2)$
• B. $(20\subset 8)\cup (4\subset 1)\parallel (4\cap 1)$
• C. $(12\subset 4)\supset (5\supset 1)\leftarrow (10\cap 20)$
• D. $(10\cap 2)\supset (2\cup 2)\to (10\cup 2)$

Answer 1

The correct option is D $(10\cap 2)\supset (2\cup 2)\to (10\cup 2)$

After applying the signs
1. $(10+2)\times (2=2)<(10÷2)$
$12\times 2<5$
$24<4$ This is False
2. $(20-8)÷(4-1)=(4+1)$
$12÷3=5$
$4=5$ This is False
3. $(12-4)\times (5\times 1)<(10+20)$
$8\times 4<30$
$40<30$ This is False
4. $(10+2)\times (2÷2)>(10÷2)$
$12\times 1>5$
$12>5$ This is True
Answer is Option D