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    Question

    After interchanging ├Ч with ├╖ , and 7 with 4 , which of

    the following equations becomes correct?
    A 21 ├Ч 4 + 7 ├╖ 5 = 24 Correct Answer Incorrect Answer
    B 35 ├Ч 4 + 7 ├╖ 2 = 20 Correct Answer Incorrect Answer
    C 7 ├╖ 4 + 15 ├Ч 5 = 35 Correct Answer Incorrect Answer
    D 140 ├Ч 4 + 20 ├╖ 7 = 100 Correct Answer Incorrect Answer

    Solution

    1. 21 ├Ч┬а 4 + 7┬а ├╖ 5 = 24 тЗТ 21 ├╖ 7 + 4 ├Ч 5 тЗТ 3 + 20 тЗТ 23 тЙа 24 2. 35 ├Ч┬а 4 + 7 ├╖ 2 = 20 тЗТ 35 ├╖ 7 + 4 ├Ч 2 тЗТ 5 + 8 тЗТ 13 тЙа 20 3. 7 ├╖ 4 + 15 ├Ч 5 = 35 тЗТ 4 ├Ч 7 + 15 ├╖ 5 тЗТ 28 + 3 тЗТ 31 тЙа 35 4. 140 ├Ч 4 + 20 ├╖ 7 = 100 тЗТ 140┬а ├╖ 7 + 20 ├Ч 4 тЗТ 20 + 80 тЗТ 100 = 100 Hence, option 4 is correct.

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