Practice Questions For Today.

A. The Mean Age Of N Men In A Club Is 50 Years. Two Men, Aged 55 And 63, Left The Club And The Mean Age Reduced By 1 Year. Find The Value Of N.

            (A)        30

            (B)       20

            ( C)       18

            (D)       14

B. Find The Possible Values Of The Constant M, For Which The Curve

(M+5)X2+(M2–1)y2+2X–5Y+5 = 0, Is A Circle.

(A) 2 And 3

(B) 2 And -3

 (C) -2 And -3

(D) -2 And 3

C. Find The Rate At Which The Area Of A Circle Is Changing With Respect To Its Radius, When The Radius Is 5cm

1. 1pi
2. 5pi
3. 10pi
4. 25pi

D.Given That 1/82-3y = 2y + 2 ,Find y

1. A) 1/5
2. B)7/8 
3. C) 1
4. D) 11/5

                 Get the Solutions Here.