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Solve one math problem
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Russia TyazhelyyBass_Attack 
"Which the last nubmer in sum of: 54^35+28^21" Pretty easy, but i want to know can HLTV users solve. Btw I wont say the right answer so that everyone will solve without help.
2020-01-15 10:15
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You can just put this into a calculator though?
2020-01-15 10:17
#2
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Iran CEO_of_mens 
+1...
2020-01-15 10:19
I have solved this like 2-3 days ago without calculator. Btw i don't think that its will work like ^35 and ^21.
2020-01-15 10:19
Mine does
2020-01-15 10:20
Are you sure that you used to solve with "^" not "*"?
2020-01-15 10:28
2020-01-15 10:40
But in this way you didn't get the last number.
2020-01-15 10:41
True I guess.
2020-01-15 10:46
Damn that calculator brings back memories from high school math 😬
2020-01-15 11:06
You ok?
2020-01-15 11:10
When I was living in it, I was not ok men(( But I passed and have happily forgotten it since then..
2020-01-15 11:12
Sorry to remind you of it then. Have a good day man.
2020-01-15 12:27
It will work with any number: <en.wikipedia.org/wiki/Arbitrary-precisio..>
2020-01-15 10:42
#4
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Iran CEO_of_mens 
4×5 last 0 8×1 last 8 0+8=8
2020-01-15 10:20
Okay i said that i won't reply answers, but it's wrong.
2020-01-15 10:21
#9
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Iran CEO_of_mens 
Dude I just check it in calculator and the last figure is 8
2020-01-15 10:24
Dude i won't explain this, but calculators doesn't use the last number in numbers with prime 35 or 21 if >1
2020-01-15 10:26
#15
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Iran CEO_of_mens 
#14
2020-01-15 10:26
#12
Zeus | 
Czech Republic Marmilian 
4*5 is not the same as 4^5
2020-01-15 10:25
#14
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Iran CEO_of_mens 
I thought it was multiplication sorry
2020-01-15 10:26
#7
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Turkey ok4N__ 
4 + 8 =12 >>>>>> 2 46464646464646464646464646464646464>>>>>>>4 842684268426842684268<<<<<<<<<<<<<<<<<<<<<<<<<8
2020-01-15 10:29
2+2=4 4-1=3
2020-01-15 10:23
edited 2, I made a mistake when I didnt type it down.
2020-01-15 10:34
For the First Part: ^1 has an ending of 4, ^2 of 6 (4*4 = 16) then ^3 4 again So ^35 has an ending of 4 The Same goes for the second Part Just that ^1 = 8 , ^2 = 4 , ^3 = 2 , ^4 = 6 and then ^5= 8 again meaning that ^ 21 is also 8 8+4 =12 2?
2020-01-15 10:34
#22
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Turkey ok4N__ 
+1
2020-01-15 10:33
#24
JaCkz | 
United Kingdom rickY180 
Quick mafs
2020-01-15 10:36
#26
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Turkey ok4N__ 
-1 go back to math class
2020-01-15 10:36
#27
Italy Ndyx 
+1
2020-01-15 10:36
#29
 | 
Poland Zgrzyt 
yes, also #25 :)
2020-01-15 10:38
#11
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Australia Peekaboo1 
Last number will be 2 I solve this like thing in 3rd grade xd
2020-01-15 10:26
#17
JaCkz | 
United Kingdom rickY180 
((54^5)+(28^3))^7 An odd number square of 4 will always end in a 4 8^3 ends in a 2 4+2 = 6 Any square of 6 will always end in a 6
2020-01-15 10:29
I'm impressed bro, nice.
2020-01-15 10:32
#23
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Turkey ok4N__ 
usta adam üst işaretini paranteze alıyor sende adamı onaylıyorsun harbi retarded sın şaka gibi :DD:D:
2020-01-15 10:35
haklısın paşam artı var unuttum yapılamaz.
2020-01-15 10:43
#30
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Poland Zgrzyt 
nice, but wrong :)
2020-01-15 10:38
#21
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Turkey ok4N__ 
xaxaxaxa wtf
2020-01-15 10:33
UK education
2020-01-15 10:44
#41
JaCkz | 
United Kingdom rickY180 
Fucking dumbass! You can't just add powers together and put them in a bracket... #25 is your answer
2020-01-15 10:47
-nevermind im retarded
2020-01-15 10:31
#25
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Poland Zgrzyt 
last digit of 54^X is 4,6,4,6,4... so it will be 4 for ^35 last digit of 28^X is 8,4,2,6,8,4,2... so it will be 8 for ^21 4+8=12 so last digit of the sum is 2
2020-01-15 10:35
#28
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Turkey ok4N__ 
+1
2020-01-15 10:37
+1 ez
2020-01-15 10:43
#34
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United States gtmaniacmda 
I was confused on what the question you were asking was. Do you mean 'what is the last digit in the number calculated from this expression?'
2020-01-15 10:42
#36
JaCkz | 
United Kingdom rickY180 
456489564161165498456419842498492 Last digit here is 2
2020-01-15 10:43
Yes
2020-01-15 10:45
#42
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United States gtmaniacmda 
'54^35' will end in the digit '4' because '35' is an odd number, and the last digit of any number whose last digit it is '4' will be '4' if this number is multiplied by itself and odd number of times, and '6' if it is multiplied by itself an even number of times. '28^21' will end in digit '8'; the pattern is a little more complicated than with ending digit '4', so I will cut the explanation and just say the last digit pattern is '8', '4', '2', '6', repeat (e.g. 8, 64, 512, 4096, 32768, etc.). This means '28^21' will end in digit '8' (following the pattern). So, all that is left to do is add '4' and '8', which gives 12. The last digit of '54^35+28^21' is 2.
2020-01-15 10:54
ok
2020-01-15 11:00
3
2020-01-15 12:35
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