Math Central - mathcentral.uregina.ca
Quandaries & Queries
Q & Q
 Topic: two digits
start over

4 items are filed under this topic.

 Page1/1
 More on the last 2 digits of a^k = N 2020-08-07 From Jay:I've seen solution methods for finding the last 2 digits of a^k = N, where a and k are known. My question is: What if the number N is known and the last 2 digits are, say, ...62. Is there a way to find, for any given a, the value of k which will result in a number where the last 2 digits are ...62? and if that is possible, then do the same for a number with the last n digits (say 7 or 53 or something)?Answered by Harley Weston. The last two digits of a phone number 2016-04-03 From Joshua:I want to find the last two digits of a phone number whose first eight numbers of a ten digit phone numbers are known.Answered by Penny Nom. The last two digits 2006-07-22 From Sam:You have answered this question already but you only answered to one digit. What are the last TWO digits of: 3 to the power of 1994 7 to the power of 1994 3 to the power of 1994 + 7 to the power of 1994 7 to the power of 1994 - 3 to the power of 1994 Answered by Paul Betts and Penny Nom. A palindrome question 2004-09-28 From Lilly:12, 21, 13, and 31 are the only double-digit numbers whose squares are the palindromes of the squares of the palindromes of double-digit numbers. I was wondering why it works for these numbers, and if only these numbers work this way.Answered by Chris Fisher and Penny Nom.

 Page1/1

 Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.
 about math central :: site map :: links :: notre site français