If `x+12=12+7,\ ` then the commutativity of addition `x=` (a) 12 (b) 7 (c) 19 (d) 5

If x/(7)=12/(28) , then x is

If 80 : 60=x : 12 , then x= (a) 16 (b) 7 (c) 24 (d) 50

If the arithmetic mean of 7,\ 5,\ 13 ,\ x and 9 is 10 , then the value of x is (a) 10 (b) 12 (c) 14 (d) 16

Choose the correct option 5/4-7/6-(-2)/3=\ (a) 3/4 (b) -3/4 (c) (-7)/(12) (d) 7/(12)

The average of ten numbers is 7. If each number is multiplied by 12, then the average of the new set of numbers is : (a) 7 (b) 19 (c) 82 (d) 84

If 80:60=x:12, then x=16(b)7(c)24 (d) 50

In Fig. , A D=4c m , B D=3c m and C B=12 c m , find cottheta . (a) (12)/5 (b) 5/(12) (c) (13)/(12) (d) (12)/(13) (

In Figure, A D=4c m , B D=3c m and C B=12 c m , find cottheta . (a) (12)/5 (b) 5/(12) (c) (13)/(12) (d) (12)/(13)

if sin x = (4)/(5) , then (sec x )/( sin x ) = ? A. (23)/(12) B. (25)/(4) C. (4)/(5) D. (25)/(12)