When can the fundamental arithmetical operation on 2 recurring decimals be performed directly without converting them to vulgar fraction? A) Only in addition and subtraction B) Only in addition and multiplication C) Only in addition, subtraction and multiplication D) In all the four-arithmetic operation:

Give chapter 5 lines and angles own questions for board exams 

Find the following percentage value:

1) 15% of 250.

Find the angle which is equal to its supplement.

Find the breadth of the rectangle whose length is 70 cm and perimeter 200 cm.

Convert 1 gallon into liters.

a. 3.05 liters

b. 3.78 liters

c. 4.05 liters

d. 4.78 liters