3^213^17+2^732^72=3^21 17+2^73 72 nbsp; nbsp; nbsp; nbsp;=3^4+2^1 nbsp; nbsp; nbsp;=81+2 =83 ...

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Byju's Answer

Standard VII

Mathematics

Division Rules of Exponents

321317+273272...

Question

$\frac{3^{21}}{3^{17}} + \frac{2^{73}}{2^{72}} =$

85

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79

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83

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81

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Solution

The correct option is C $83$
$\frac{3^{21}}{3^{17}} + \frac{2^{73}}{2^{72}} = 3^{21 - 17} + 2^{73 - 72}$
$= 3^{4} + 2^{1}$
$= 81 + 2$
$= 83$

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321317+273272=

The correct option is C 83321317+273272=321−17+273−72 =34+21 =81+2 =83

$\frac{3^{21}}{3^{17}} + \frac{2^{73}}{2^{72}} =$

The correct option is C $83$
$\frac{3^{21}}{3^{17}} + \frac{2^{73}}{2^{72}} = 3^{21 - 17} + 2^{73 - 72}$
$= 3^{4} + 2^{1}$
$= 81 + 2$
$= 83$