Math

Find the units digit in 23^7777 by looking for mod 10.

  1. 👍 0
  2. 👎 0
  3. 👁 98

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    Five three digit numbers including N were to be added. While adding, the reverse of N was added by mistake instead of N. Hence the summ increased by 11 times the summ of the digits of N.Eight times the difference of N's units and

    asked by Suzanne on November 27, 2014
  2. algebra math

    If 3 is raised to the 59th power, i.e. 359, what is the units digit? The units digit is the digit in the ones place. Explain the method used to find your answer.

    asked by bethel on June 18, 2012
  3. Algebra 1

    How many two-digit numbers have a tens digit that is greater than the units digit? Explain.

    asked by Jackie on March 8, 2014
  4. Math

    Find all numbers $r$ for which the system of congruences: x == r mod 6 x == 9 mod 20 x == 4 mod 45 has a solution.

    asked by Anonymous on September 30, 2016
  1. Counting and Probability

    How many 3-digit numbers have the units digit larger than the tens digit?

    asked by Mr. Alexander on August 12, 2015
  2. Math (Proof)

    Prove that if ab = ac (mod n) and a is relatively prime to n, then b = c (mod n). Proof: a and n are relatively prime and from ab = ac(mod n), we have n|(ab-ac), so n|a(b-c). Since (a,n)=1 (relatively prime), we get n(b-c). hence

    asked by Michael on February 14, 2013
  3. Algebra

    The difference between the digits in a two-digit numeral is 3. The units' digit is twice the tens' digit. Find the nuermal.

    asked by Jane on October 22, 2012
  4. Math

    Prove that a^3 ≡ a (mod 3) for every positive integer a. What I did: Assume a^3 ≡ a (mod 3) is true for every positive integer a. Then 3a^3 ≡ 3a (mod 3). (3a^3 - 3a)/3 = k, where k is an integer a^3 - a = k Therefore, a^3

    asked by Kid on November 14, 2018
  1. math

    Which Statements of congruence are true and which are false and why? 177 _= 17 (mod 8) 871 _= 713 (mod 29) 1322 _= 5294 (mod 12) 5141 _= 8353 (mod 11) 13944 _= 8919 (mod 13) 67 x 73 _= 1 x 3 (mod 5) 17 x 18 x 19 x 20 _= 4! (mod 8)

    asked by Jimmy on October 24, 2012
  2. math

    A student claims that to divide a number with the units digit 0 by 10, she just crosses out the 0 to get the answer. She wants to know if this is always true and why and if the 0 has to be the units digit. How do you respond?

    asked by Kali G on September 13, 2014
  3. algebra

    For every positive 2-digit number, x, with tens digit t and units digit u , let y be the 2 digit number formed by reversing the digits of x. Which of the following expressions is equivalent to x-y? a. 9(t-u) b. 9(u-t) c. 9t-u d.0

    asked by reena on February 11, 2012
  4. Math

    Which Statements of congruence are true and which are false and why? 177 _= 17 (mod 8) 871 _= 713 (mod 29) 1322 _= 5294 (mod 12) 5141 _= 8353 (mod 11) 13944 _= 8919 (mod 13) 67 x 73 _= 1 x 3 (mod 5) 17 x 18 x 19 x 20 _= 4! (mod 8)

    asked by Jimmy on October 22, 2012

You can view more similar questions or ask a new question.