31. Simplify : (3)8 × (3)4 = ?
32. Simplify : $$\frac{{343 \times 49}}{{216 \times 16 \times 81}} = ?$$
33. Simplify : $$\frac{{16 \times 32}}{{9 \times 27 \times 81}} = ?$$
34. Given $$\sqrt 2 $$ = 1.414, the value of $$\sqrt 8 $$ $$\, + $$ $${\text{2}}\sqrt {32} $$ $$\, - $$ $$3\sqrt {128} $$ $$\,\, + $$ $${\text{4}}\sqrt {50} $$ is = ?
35. $${9^3} \times {\left( {81} \right)^2} \div {\left( {27} \right)^3} = {\left( 3 \right)^?}$$
36. $${\left( 6 \right)^4} \div {\left( {36} \right)^3} \times 216 = {6^{\left( {? - 5} \right)}}$$
37. The value of $${\left( {256} \right)^{\frac{5}{4}}}$$ is = ?
38. $$\sqrt {2 + \sqrt {2 + \sqrt {2 + ......} } } $$ is equal to ?
39. The value of $${\text{2}} + \sqrt {0.09} \, - \,\root 3 \of {0.008} \, - \,75\% $$ of 2.80 is = ?
40. The value of $${\left( {3 + 2\sqrt 2 } \right)^{ - 3}}$$ $$ + {\left( {3 - 2\sqrt 2 } \right)^{ - 3}} = ?$$
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