Question

The unit digit of the expression 25^6251+36^528+73^54

Answer 1

Step-by-step explanation:

firstt we need to consider the numbers separately we should find the unit digits and we should find the sum of the unit digit of that numbers

now that final results unit digit is the answer

5 power anything is 5(unit digit) so the first numbers unit digit is 5

also 6 power anything is 6 (unit digit) and then the unit digit of that number is 6

now write the 54 in terms of 4x + y and that is:- 4(13)+2

4 power 2 is 6 unit digit

add those unit digits that is 17

unit digit of that whole expression is 7