Following are some good brain riddles with answers. Try to get to the solutions yourself before scrolling down for the answers!
- What would be the seventh rung of the following pyramid?
1
11
21
1211
111221
312211
13112221
(Psst! This is one of the best riddles and my personal favorite in this section - so, don't let me down on this one!)
Answer: 1113213211. After the first line, each line describes the previous line as follows:
one 1
2 Ones
One 2, One 1
(and so on...) - You have a barrel of beer and you need to measure out just one gallon. How do you do this if you only have a three-gallon container and a five-gallon container?
Answer: Fill the 3 gallon container with beer and pour it into the 5 gallon container. Then fill the 3-gallon container again and keep pouring it into the 5-gallon container till the latter is full to the brim. One gallon will be left in the 3-gallon container. - If you have 6 black socks, 4 blue socks, 8 brown socks, and 2 red socks in your sock drawer, what is the minimum number of socks that you need to pull out in the dark to be sure you had a matching pair?
Answer: At least 5, so that at least one color has two socks - Jake weighs half as much as Joe, and John weighs three times as much as Jake. Together, they weigh 720 pounds. How much does each man weigh?
Answer: If Jake weighs twice as much as Joe, and John three times as much, dividing their total weight by six gives us Jake's weight (think x + 2x + 3x = 720). 720 divided by 6 tells us that Jake weighs 120 pounds, so Joe weighs 240 pounds and John weighs 360 pounds. - So you think you're good at math? Complete the sequence: 1=3, 2=3, 3=5, 4=4, 5=4, 6=3, 7=5, 8=5, 9=4, 10=3, 11=?, 12=?
Answer: 6. That is the number of letters in the spelling of each number! - In a certain country ½ of 5 = 3. Assuming the same proportion, what would be the value of 1/3 of 10 ?
Answer: 4 - 27 ducks are marching to the pond. 5 lose their way, 13 return and 9 of them make it to the pond. What happens to the rest of them?
Answer: None are remaining!( 27-5= 22, 22-13= 9, 9-9=0!!!) - Mary has three coins of the USA currency. They are neither, quarters, dimes nor pennies but they add up to 60 cents. What are they?
Answer: A 50 cent and 2 nickels - A merchant can place 8 large boxes or 10 small boxes into a carton for shipping. In one shipment, he sent a total of 96 boxes. If there are more large boxes than small boxes, how many cartons did he ship?
Answer: 11 cartons total; 7 large boxes (7 * 8 = 56 boxes), 4 small boxes (4*10 = 40 boxes),11 total cartons and 96 boxes. - A frog fell into a hole that was 14 ½ feet deep. He could jump 3 feet, but he slid back a foot each time he jumped. How many jumps does it take him to get out of the hole?
Answer: Every 3 feet jump accompanied by a 1 foot slide equals 2 feet high jumps each; at this rate, so the 7th jump, starting at 12 feet, brings him to 15 feet, which takes him out of the hole. - Aron had twelve ear buds in front of him. He took one away. Now he had nine in front of him. How is this possible?
Answer: The remaining buds were arranged to form the figure of 9!! How else??Reference: http://www.buzzle.com/articles/math-riddles-with-answers.html
