Instructions
What will come in place of the question mark (?) in each of the following questions ?
Solution
Expression : $$\frac{(0.9)^{3}-(0.3)^{3}}{(0.9)^{3}+(0.3)^{3}}=?$$
= $$\frac{0.729 - 0.027}{0.0729 + 0.027}$$
= $$\frac{0.702}{0.756} = \frac{13}{14}$$
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