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What is the highest number that can be created with 1,9,9 and 5? And use and symbols but you have keep the numbers in that order!

Guest Feb 16, 2017
#1
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Multiplying may be your best option but you can add the one to the nine, so it's not wasted.

(1+9)(9)(5) = 90x5 = 450

HighSchoolCalculus  Feb 16, 2017
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$$(19)\times (9)\times (5)=855$$

asinus  Feb 16, 2017
#5
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$$19\times95=1805$$

asinus  Feb 16, 2017
#2
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What is the highest number that can be created with 1,9,9 and 5? And use and symbols but you have keep the numbers in that order!

$$(19)^{9^5}$$ $$=3.49874300244\times 10^{57}$$

$$19^{95}=3.03104295096\times 10^{121}$$

Not quite sure  !

asinus  Feb 16, 2017
edited by asinus  Feb 16, 2017
edited by asinus  Feb 16, 2017
#3
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l don't think exponents can be used. More like basic functions. l thought the same but they always shoot you down for using exponents on these types of problems.

HighSchoolCalculus  Feb 16, 2017
#6
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If powers are allowed then:

19^9^5 =1.32246... x 10^75,509

Guest Feb 16, 2017