A's office is 4 km due east of B's office . C's office is 6 km due north of B's office and 4 km due east of D's office. What is the straight-line distance, in km, from A's office to D's?

The value of the angle formed at the center of a circle is

A fair coin is to be tossed 100 times with each toss resulting in a head or a tail. If H is the total number o...

The average (arithmetic mean ) of x and y is 40 . If z=10 , what is the average of x, y and z?

The food stock in a cantonment having 1200 soldiers is enough to last for 30 days after 10 days another 300 ne...

The average age of the father and two sons is 16 years and 7 months. If the mother is 14 years and 4 months an...

If the average (arithmetic mean) of 5 consecutive numbers is 12 , what is the sum if the least and the greates...