Instructions

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

Question 13

$$59^{2} - 49^{2} = 2^{?} \times 3^{3} \times 5$$

Solution

Expression : $$59^{2} - 49^{2} = 2^{?} \times 3^{3} \times 5$$

=> $$(59 + 49) (59 - 49) = 2^? * 27 * 5$$

=> $$2^? = \frac{108 * 10}{27 * 5}$$

=> $$2^? = 8 = 2^3$$

=> $$? = 3$$


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