Step-by-step explanation:
No of Student in Debre Berhan University - 80 students
<h2>
<em>No </em><em>of </em><em>student </em><em>good </em><em>in </em><em>mathematics </em><em>-</em><em> </em><em>45 </em><em>student's </em></h2>
<em>No </em><em>of </em><em>students </em><em>good </em><em>in </em><em>mathematics </em><em>and </em><em>English </em><em>-</em><em>15</em>
<h2><u>No </u><u>of </u><u>students </u><u>good </u><u>in </u><u>mathematics </u><u>and </u><u>psychology </u><u>-</u><u>13</u></h2>
<h2><u>No of students good </u><u>in </u><u>English </u><u>and </u><u>psychology </u><u>-</u><u>16</u></h2>
<h3><u>No of students good in</u><u> </u><u>psychology </u><u>-</u><u>20</u></h3>
<u>no </u><u>of </u><u>student </u><u>good </u><u>in </u><u>mathematics </u><u>-</u><u>45+</u><u>1</u><u>5</u><u>+</u><u>1</u><u>3</u>
<h2><u>-</u>
<em><u>7</u></em><em><u>5</u></em></h2>
<em><u>therefore </u></em><em><u>no </u></em><em><u>of </u></em><em><u>student </u></em><em><u>good </u></em><em><u>in </u></em><em><u>math </u></em><em><u>is </u></em><em><u>75 </u></em><em><u>.</u></em>
<em><u>pls </u></em><em><u>mark </u></em><em><u>me </u></em><em><u>branilest </u></em>