Once again you are given four cards. Each card has a number printed on one side and a letter on the other side. Which are the only two cards you need to turn over to check whether the following rule holds?
"If a card has a consonant on one side, then it has an odd number on the other side."

A tea party is arranged for 16 people along two sides of a long table with 8 chairs on each side . Four men wish to sit on one particular side and two on the other side the number of ways that they can be seated is

A boats crew consists of 16 men , 6 of whom can only row on one side and 4 only on the other . The number of ways in which the crew be arranged 8 on each side is

A large open tank has two holes in the wall. One is a square hole of side L at a depth y from the top and the other is a circular hole of radius R at a depth 4y from the top. When the tank is completely filled with water, the quantities of water flowing out per second from the two holes are the same. The value of R is

Determine the number of 5-card combinations out of a deck of 52 cards if each selection of 5 cards has exactly one king.

A staw 6 cm long floats an water . The water film on one side has surface tension of 50 dyne / cm on the other side camphor reduces the surface tension to 40 dyne/cm . The resultant force acting on the straw is 12 K dyne . find K

Jaya has taken an iron rod and fixed pins with the help of wax on one side. On the other side, she heated the iron rod. By observing the phenomena that she came to know._______a) Wax is melted on heating b) Iron is a good conductor of heat c) Iron is an insulator.

Two fields have the same perimeter . one is a square of side 72m and another is a rectangle of length 80m. which plot has the greater area and by how much?