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Ans 6:
Class : Class 1 
                                                                                                        
                                                                                                        @rudra tripathi I am sorry but you are wrong. Not being mean or anything but the correct answer is B.
                                                                                                    
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Ans 1:
Class : Class 4 
                                                                                                        
                                                                                                        could you pl explain how it's answer is 'not defined'? cuz I thought the answer was 0
                                                                                                    
                                                                                                    
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 Triangle PAB is formed by three tangents to circle with centre 
O and ∠APB = 40°, then angle 
AOB equals ______.