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3. Professor M. Zhask have a different books to be arranged on a bookshelf. 3 of these books were written by S. Mathilda, 4 by F. Leomord, and 2 by A. Gusion, How many possible permutations are there if the books of the same author must be placed together?
Answers & Comments
ANSWERS:
For Number One.
• Obtuse Triangle
For Number Two.
• Right Triangle
For Number Three.
• Isosceles Triangle
• Acute Triangle
For Number Four.
• Acute Triangle
For Number Five.
• Obtuse Triangle
For Number Six.
• Acute Triangle
For Number Seven.
• Obtuse Triangle
For Number Eight.
• Equiangular Triangle
For Number Nine.
• Acute Triangle
For Number Ten.
• Right Triangle
1.) 60° (Obtuse Angle)
2.) 90° (Right Angle)
3.) 68° (Acute Angle )
4.) 28° (Obtuse Angle)
5.) 23°(Obtuse Angle)
6.) 55° (Acute Angle)
7.) 39° (Obtuse Angle)
8.) 60° (Equiangular)
9.) 26° (Acute Angle)
10.) 90° (Right Angle)
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