Topic: units digit list of topics
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28 items are filed under this topic.

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	The units digit of a square		2021-09-04
		From Aarzu: Sorry this may be a dumb question but how do you find possible unit digits of a perfect square Answered by Penny Nom.
	The tens digit of a number is five times the unit digit		2016-05-19
		From sanjeev: The tens digit of a number is five times the unit digit. Find the number? Answered by Penny Nom.
	The units digit of a prime		2015-01-08
		From Patricia: Every prime number greater than 10 has a digit in the ones place that is included in which set of numbers below 1 3 7 9 or 1 3 7 or 0 2 4 5 6 8 or 1 3 5 9 Answered by Walter Whiteley.
	Units digit		2014-01-03
		From gracie: 9^23 units digit Answered by Penny Nom.
	The units digit		2012-09-11
		From Shaunice: Simplify each of the following expressions and determine what the last digit would be. a. (24^15) 4 Answered by Penny Nom.
	The units digit of a prime number		2011-11-22
		From Mike: Every prime number larger than 10 has a digit in the ones place that is included in which set of numbers below? A. 1,3,7,9 B. 1,3,5,9 C. 0,2,4,5,6,8 D. 1,3,7 Answered by Penny Nom.
	A two digit number		2011-03-01
		From jhoanna: the sum of the digits of a two digit number is 10. The value of the number is 16 times the units digit.Find the number. Answered by Penny Nom.
	Units digit		2009-07-23
		From Jyll: How do solve for the units digit? And that, what is the units digit of the first 1000 prime numbers? Answered by Robert Dawson.
	Units digit		2009-04-15
		From A student: What is the unit digit of 47 to the 43rd power? Please answer as soon as possible. Thank you. Answered by Stephen La Rocque.
	The units digit of 2^95		2009-03-18
		From Sharvon: what is the units digit of 2^95 Answered by Robert Dawson.
	The units digit is 5		2009-02-02
		From Ray: the number that when squared the units digit is 5 Answered by Penny Nom.
	The 2 rightmost digits		2008-12-18
		From Peter: Is there a pattern for the 2 rightmost digits of a power? For example, one problem for a math competition was what are the 2 rightmost digits of 3^1993? Answered by Robert Dawson and Victoria West.
	The units digit of (7*3)^21		2008-07-16
		From surender: what will be the unit digit of (7*3)^21?plz give me method 2 calculate such problems.thank you. Answered by Penny Nom.
	Units digit		2008-07-02
		From seemachauhan: How to find unit digit of various numbers and what are unit digits? Answered by Penny Nom.
	Units digit		2008-01-11
		From Robin: hello - my question is: what is the units digit of (13) to 4; (17) to 2 and (29) to 3 [(13)4(17)2(29)3] (possible answers: 9 or 7 or 5 or 3 or 1) Answered by Penny Nom.
	The sum of the ones		2007-10-29
		From Hangsun: When 2 two digit numbers are added what is the greatest possible sum of the ones? Answered by Penny Nom.
	The units digit of 23^45 + 67^89		2007-08-16
		From Christopher: What is the units digit of 23 to the 45th power plus 67 to the 89th power? Answered by Stephen La Rocque.
	The units digit of 9^2006 + 3^2006		2007-01-30
		From Ryan: What is the units digit of the sum of 9^2006 and 3^2006 Answered by Penny Nom.
	The units digit		2007-01-09
		From Tyrone: This may be a dumb question, but what is the unit digit of two digits, eg: 62 or 13 or 45. Answered by Steve La Rocque and Diane Hanson.
	The units digit of 1^5 + 2^5 + ... + 2006^5		2006-11-14
		From Lana: Compute the unit's digit of : 1 to the power of 5 + 2 to the power of 5 + 3 to the power of 5 + 4 to the power of 5 + 5 to the power of 5 + 6 to the power of 5 + ... + 2006 to the power of 5 . Answered by Stephen La Rocque and Penny Nom.
	The units digit		2006-03-05
		From Taran: My teacher asked: What is the unit's digit in the product 5 X 10 X 15 X 20 X 25? What is a "unit's digit", what are they asking for? Answered by Penny Nom.
	What is the unit's digit?		2005-10-04
		From Alex: Question: What is the unit's digit of the following problem? 3155 + 7412 (3 to the 155th power + 7 to the 412th power.) Answered by Penny Nom.
	n^2+n-1 has no divisors ending with 3 or 7		2005-09-08
		From Arne: at least it seems like for any integers n and k, 10k+3 and 10k+7 do not divide n²+n-1 I tested this for every n from 0 to 3200 (which means same for the numbers from -3201 to -1) could this be true, or is it just coincidence, or am I just totally wrong? Answered by Richard McIntosh.
	The last digit of a large exponent		2004-10-20
		From Landon: How can one determine the last digit of a large exponent by hand. I have seen several examples of how to do this by breaking it up into smaller exponents, but is there a formula or some common things to look for? Answered by Penny Nom.
	The last digit of 2^28		2004-09-25
		From A student: I am currently enrolled in a math reasoning class and a math question I have to answer is determine the units digit in 3 28power. When I set up a table and keep cubing the numbers, I find a pattern with the last digits of the numbers that follow 1,3,9,7. My calculator gets to about the 19th power, and then I get an error. If I continued the pattern, would the units digit then be the last digit of 3 28th power, which would be a 7? Please let me know if I am solving this correctly and what a unit's digit actually is. Answered by Penny Nom.
	The units digit of 57 to the 28th power		2003-09-01
		From Maria: If 57 is raised to the 28th power, what must be the units digit in the result? If you raise 7 to the 500th power, what is the numeral that will appear in the units digit position? Answered by Penny Nom.
	The units digit of 2 to the power of 31921		2002-12-18
		From A student: If 2 to the power of 31921 is multiplied out, what will be the units digit? Answered by Penny Nom.
	The units digit of 3 to the 58th power		2000-05-10
		From Kylie Mcalpine: the questions we have been asked are what is the units digit of the following: a) 358 b) 2358 c) 1731 and the harder question of: what is the units digit of the following sum: 13841 + 17508 + 24617 = ??????? Answered by Paul Betts and Penny Nom.

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