Brain Teasers 1

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Presentation Transcript

Brain Teasers : 

Brain Teasers Can You Think Outside the Box?

Can You Make 100? : 

Can You Make 100? Remove 9 of the sticks and make 100.

Can You Make 100? Answer : 

Can You Make 100? Answer When you remove the 9 sticks you form the standard form of the number 100.

Can You Change the Point? : 

Can You Change the Point? Move only 3 of the coins to make the triangle point in an upward direction.

Can You Change the Point? Answer : 

Can You Change the Point? Answer Move the 2 quarters in the top corners down 2 rows. Place the quarter on the bottom point to the top to make a point.

Can You Connect the Dots? : 

Can You Connect the Dots? Use 4 lines to connect all the dots.

Can You Connect the Dots? Answer : 

Can You Connect the Dots? Answer What unexpected action did you have to do to solve this brain teaser?

Can You Find 2 Ways to Make Four? : 

Can You Find 2 Ways to Make Four? Find 2 ways that you can rearrange the sticks to create four.

Can You Find 2 Ways to Make Four? Answer : 

Can You Find 2 Ways to Make Four? Answer One solution is to create the standard form of 4 and the other is to create the roman numeral for 4.

Can You Find How Many Bicycles & Tricycles? : 

Can You Find How Many Bicycles & Tricycles? At the park there were a total of 11 bicycles and tricycles. If the total number of wheels was 26, how many tricycles were at the park?

Bicycles and Tricycles in The Park Answer : 

Bicycles and Tricycles in The Park Answer Assuming 2 wheels for each bicycle, 11 cycles will have 22 wheels. But, there are 26 − 22 = 4 extra wheels. As bicycles have 2 wheels and tricycles have 3 wheels, there is 1 extra wheel per tricycle in the park. Thus, the 4 extra wheels belong to 4 tricycles.

Can You Cut the Cake Into 8 Pieces? : 

Can You Cut the Cake Into 8 Pieces? You must cut a birthday cake into exactly eight pieces, but you're only allowed to make three straight cuts, and you can't move pieces of the cake as you cut. How can you do it?

Cut the Cake Answer : 

Cut the Cake Answer Use the first two cuts to cut an 'X' through the cake. Now you have four pieces. Make the third cut horizontal, which will divide the four pieces into eight. There's four pieces on the top tier and four more just underneath it.

Can You Not Get Tic-Tac-Toe With 6 Xs? : 

Can You Not Get Tic-Tac-Toe With 6 Xs? Can you place six X's on a Tic-Tac-Toe board without making three-in-a-row in any direction?

Can You Not Get Tic-Tac-Toe With 6 Xs? Answer : 

Can You Not Get Tic-Tac-Toe With 6 Xs? Answer Is it possible to not get Tic-Tac-Toe if I add another X? Why, or why not? X X X X X X

Can You Make the Rows, Columns, and Diagonals Equal 15? : 

Can You Make the Rows, Columns, and Diagonals Equal 15? Arrange the numbers 1 through 9 in the table so that the numbers in each row, column, and diagonal adds up to 15.

Row, Columns, and Diagonals Equal 15 Answer : 

Row, Columns, and Diagonals Equal 15 Answer

Can You Get All the Cups Up? : 

Can You Get All the Cups Up? Your task is to get all the cups right side up, but you must follow these rules: You have only three moves. For each move, you must turn over two cups at a time—never one at a time.

Can You Get All the Cups Up? Answer : 

Can You Get All the Cups Up? Answer First move: Turn over the first and second cups. Second move: Turn over the first and third cups. Third move: Turn over the first and second cups. Now they should all be right side up. Start Step 1 Step 2 Step 3

Can You Determine the Location of the Cards? : 

Can You Determine the Location of the Cards? Here are the backs of three cards from an ordinary deck of cards. A, B, and C: You have to identify each card as a queen or king and as a heart or spade based on the following four pieces of information. 1. There's at least one queen to the right of a king. 2. There's at least one queen to the left of a queen. 3. There's at least one heart to the left of a spade. 4. There's at least one heart to the right of a heart. A B C

Can You Determine the Location of the Cards? Answer : 

Can You Determine the Location of the Cards? Answer Card A = king of heartsCard B = queen of heartsCard C = queen of spades

Can You Figure Out the Bottom Line? : 

Can You Figure Out the Bottom Line? Look carefully at each line of numbers in the number pyramid. What number should replace the question mark in the middle of the bottom line? 82 5 21 2 4 2 11 2 1 3 1 2 11 2 1 1 ? 1 1 2 1

Can You Figure Out the Bottom Line? Answer : 

Can You Figure Out the Bottom Line? Answer The number 2 should replace the question mark. Each horizontal row adds up to one more than the one above it, so the last row must add up to 12. 8 2 5 2 2+5+2 = 91 2 4 2 1 1+2+4+2+1=101 2 1 3 1 2 1 1+2+1+3+1+2+1=111 2 1 1 2 1 1 2 1 1+2+1+1+2+1+1+2+1=12

Can You Make Five? : 

Can You Make Five? For each of the three rows below, insert the mathematical symbols (+, -, ÷, ×) that will make the equation correct for someone calculating to from left to right. a. 3 3 3 3 3 = 5 b. 4 4 4 4 4 = 5 c. 5 5 5 5 5 = 5 + - ÷ x

Can You Make Five? Answer : 

Can You Make Five? Answer a. 3 × 3 + 3 + 3 ÷ 3 = 5b. 4 - 4 + 4 ÷ 4 + 4 = 5c. 5 - 5 + 5 - 5 + 5 = 5 = 5 + - ÷ x

Which Number is the Odd Man Out? : 

Which Number is the Odd Man Out? Which number on this square is the odd one out.

Which Number is the Odd Man Out?Answer : 

Which Number is the Odd Man Out?Answer 34: All the other numbers are evenly divisible by 3.

Can You Stack the Boxes? : 

Can You Stack the Boxes? Kenny had an after-school job at the Pet Food Emporium. His boss told him to stack 35 cartons of dog food so that each row of cartons would have one more than the row above it. How many rows of cartons did Kenny have when he was finished?

Can You Stack the Boxes? Answer : 

Can You Stack the Boxes? Answer 7 rows. 8 cartons in the bottom row, 2 in the top.

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