Calculate the velocity of water coming out of a double-entry pipe

If we know the volumetric flow rates of the water going into the two branches, then what would be the velocity of the water coming out?

Brain Teaser: Fill in the Blanks

Four words with the letters SNT, in that order, have all their other letters removed. You must use the letters below to fill in the blanks.
_ _ S _ N T _ _ _
S _ _ N T
S _ N _ _ T
S _ _ _ N T
Letters to use: A, A, E, E, E, I, I, L, L, Q, S, S, U, U

Brain Teaser: A Sliding Ladder

A 25 ft ladder (assume it is not an extension ladder) is placed with its foot 7 ft away from a building. If the top of the ladder slips down 4 ft, how many feet will the bottom slide out?

Brain teaser – A distribution manager’s dilemma

John the distribution manager for a leading mobile phone company has a dilemma. The warehouse has 10 unlabelled rows of pallets, each row contains thousands of phones destined for different countries. Each 100g mobile phone is exactly the same except for those in the row destined for Japan, which have a “special” 2g chip encased […]

Brain Teaser – Determine the code to open the briefcase

Doug had forgotten the 5 digit code to his briefcase. However, he did remember five clues: The fifth number plus the third number equals fourteen; The fourth number is one more than the second number; The first number is one less than twice the second number; The second number plus the third number equals ten; […]

The Raffle Tickets Brain Teaser

Challenge your brain with this interesting brain teaser. Given a number of statement find the solution to the question asked.

Challenge your brain – Boys vs. Girls jigsaw puzzle

A team of 6 girls and 4 boys put together a 2200-piece jigsaw puzzle in 4 hours. The same jigsaw puzzle was put together in 8 hours by a team of two girls and five boys.

Who are better at putting jigsaw puzzles together, boys or girls, and by how much?

Brain teaser – Make this equation true, 999999999999999 = 1990

Insert +, -, x or / in suitable places on the left hand side of = so as to make the above equation true:

Cross a Rope Bridge in 17 minutes

Can you figure out a way for four people to cross a rickety bridge in exactly (or under) 17 minutes?

Which of the following best expresses the main conclusion of the given argument

Discuss. No electoral system will ever produce the right leaders.