Question 42

Put the proper symbols $$+, -, \times, \div$$ in the blank spaces to fit the equation.

(18_3)_7_15_5 = 0

According to BODMAS rule

Bracket open first then division , multiplication, addition and subtraction

Step 1: (18+3)= 21

Step 2:$$ 21 \div 7 - 15 \div 5 $$

Step 3: 3-3=0

Thus option C is the answer

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