Instructions

What will come in place of the question mark (?) in each of the following Questions ?

Question 10

$$878.34 - ? + 345.43 = 579.39$$

Solution

Expression : $$878.34 - ? + 345.43 = 579.39$$

=> $$1223.77 - ? = 579.39$$

=> $$? = 1223.77 - 579.39 = 644.38$$

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