Answer all these question with out any help!

Question

7-2)   How many triangles are there?

                                            

 

 

7-3)  Which fraction is the smallest?

                           

 

 

7-4)  If A # B = (A x B) / (A + B)

         a) Calculate 9 # (10 # 10)

         b) Calculate 8 # (5 # 5)

 

 

7-5)   Max started to read a novel. He read 15 pages a day. After 6 days he had 3/8 of the book left. How many pages are there in the book?

                                                                        

Answer 1

1.) 22

2.) 60/121

3.) 45/14 & 20/10.5

4.) 144

Answer 2

7-2) 22

7-3) 60/121

7-4) 150

144

Answer 3

7-2) 20

7-3) 60/121

7-4) 45/14

7-5) 144

Answer 4

7-2) 22

7-3) 60/121

7-4) ???????????????????????????

7-5) 144

Answer 5

7-2)20

7-3)60/121

7-4)no idea

7-5)240