Qs

Test Preparation
1

<p>if 537^102 were calculated, wat would be the 1st digit?</p>

2

<p>nvm…got it…its 9</p>

3

<p>how are you supposed to figure that out?</p>

4

<p>you mean the units digit?</p>

5

<p>the units digit is 9.</p>

<p>(537)^4=1 (mod 10)
(537)^100=1 (mod 10)
(537)^102=9 (mod 10)</p>