B.B.4 OF com Q. 1 to 6||B.B.5 OF com Q.1 to 6||B.B.2 OF com Q.1 to 7

B.B.3 OF com Q. 1 to 13

In Fig. 4.177, A C B A P Q . If B C=10 c m , P Q=5c m , B A=6. 5 c m and A P=2. 8 c m find C A and A Q . Also, find the area ( A C B): a r e a ( A P Q) . (FIGURE)

A B C is a triangle and P Q is a straight line meeting A B in P and A C in Q . If A P=1c m , P B=3c m , A Q=1. 5 c m , Q C=4. 5 m , prove that area of A P Q is one-sixteenth of the area of A B C .

Discussion OF Ex-1 & 3 OF COM

The sub-divided bar diagram given below depicts the result of B.Com. Students of a college for 3 years. Study the graph and answer the given questions. In which year, did the college have the best result for B.Com ?

In a A B C , P and Q are point on the sides A B and A C respectively, such that P Q B C . If A P=2. 4 c m , A Q=2c m , Q C=3c m and B C=6c m , find A B and P Q .

Match List I with list II and select the correct answer: List I List II (a , b as given in Euclidean algorithm (Values of q and r ) a=b q+r ) a=-112 , b=-7 q=-13 , r=1 B. a=118 , b=-9 q=14 , r=3 C. a=-109 , b=6 q=-19 , r=5 D. a=115 , b=8 q=16 , r=0 A B C D A B C D (a) 3 1 4 2 (b) 3 2 4 1 (c) 4 1 3 2 (d) 4 2 3 1

In A B C , P divides the side A B such that A P : P B=1:2 . Q is a point in A C such that P Q B C . Find the ratio of the areas of A P Q and trapezium B P Q C .

Let ^(*) be a binary operation on set Q-[1] defined by a*b=a+b-ab for all a,b in Q-[1]. Find the identity element with respect to * on Q. Also,prove that every element of Q-[1] is invertible.