Tricky Maths No. 1

[Carl]

• 1. What is the value of the '?' in the image below ?
  
  

  

  Tricky Maths No. 1 Question 1.JPG (31.79 KiB) Viewed 916 times

• 2. What is the equivalent number ?
  
  

  

  Tricky Maths No. 1 Question 2.JPG (18.72 KiB) Viewed 916 times

• 3. There are 49 dogs signed to compete in the dog show. There are 36 more small dogs than large dogs signed up to compete. How many small dogs are signed up to compete ?

• 4. How tall is the table in the image below ?
  
  

  

  Tricky Maths No. 1 Question 4.JPG (15.8 KiB) Viewed 916 times

• 5. If the cost of a cricket bat and a ball combined is €1.10 and the bat costs €1.00 more than the ball, how much is the ball ?

• 6. When is Cheryl's birthday ?
  
  Albert and Bernard just became friends with Cheryl, and they want to know when her birthday is. Cheryl gives them a list of 10 possible dates.
  
  May 15 May 16 May 19
  
  June 17 June 18
  
  July 14 July 16
  
  August 14 August 15 August 17
  
  Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively.
  
  Albert: I don't know when Cheryl's birthday is, but I know that Bernard doesn't not know too.
  
  Bernard: At first I don't know when Cheryl's birthday is, but I know now.
  
  Albert: Then I also know when Cheryl's birthday is.
  
  So when is Cheryl's birthday ?

• 7. What letter replaces the '?' in the image below ?
  
  

  

  Tricky Maths No. 1 Question 7.JPG (27.29 KiB) Viewed 916 times

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• 8. Solve the following equation.
  
  

  

  Tricky Maths No. 1 Question 8.JPG (12.79 KiB) Viewed 916 times

• 9. 5 + 5 + 5 + 5 = 555. Where should a line be drawn to make this equation accurate ?

• 10. -15 + (-5x) = 0. What is the value of 'x' that makes this equation correct ?

Answers will be provided next Thursday evening after 21:00.

[elcarretero]

1 6 each row and colum adds up to 15
2 B 9 ( 3X3=9 X3 =27 X3 =81) DIVIDED BY (3 X3 =9) =9

[elcarretero]

5 Ball cost 0.05 [0.05+1.00]
8 1 [3 divided by one third is 9, 9-9 is zero]
10 x=-3 [-3 x -5 =15, 15-15=0]

[Carl]

ANSWERS

• 1. 6. All of the numbers in every row and column add up to 15. (Also, 6 is the only number not represented out of numbers 1 through 9.)

• 2. 9. In order to solve this problem, you need to subtract the exponents (4 - 2) and solve for 3², which expands into 3 x 3 and equals 9.

• 3. 42.5 dogs. In order to figure out how many small dogs are competing, you have to subtract 36 from 49 and then divide that answer, 13, by 2, to get 6.5 dogs, or the number of big dogs competing. You then have to add 6.5 to 36 to get the number of small dogs competing, which gives you the 42.5.

• 4. 150cm.
  
  

  

  Tricky Maths No. 1 Answer No. 4.JPG (16.5 KiB) Viewed 892 times

  
  Since one measurement includes the cat's height and subtracts the turtle's and the other does the opposite, you can essentially just act like the two animals aren't there. Therefore, all you have to do is add the two measurements—170 cm and 130 cm—together and divided them by 2 to get the table's height, 150 cm.

• 5. €0.05. Using the same logic to solve this problem as Question 4.. All you have to do is subtract €1.00 from €1.10 and then divide that answer, €0.10 by 2, to get your final answer, €0.05.

• 6. Due to the length of the answer here is a link https://www.theguardian.com/science/ale ... hs-problem

• 7. J. When you add together the values given for S, B, and G, the sum comes out to 40, and making the missing letter J (which has a value of 14) makes the other diagonal's sum the same.

• 8. 1. Start by solving the division part of the equation. In order to do that, in case you forgot, you have to flip the fraction and switch from division to multiplication, thus getting 3 x 3 = 9. Now you have 9 – 9 + 1, and from there you can simply work from left to right and get your final answer: 1.

• 9. A line should be drawn on a "+" sign.
  
  

  

  Tricky Maths No. 1 Answer No. 9.JPG (15.3 KiB) Viewed 892 times

  
  When you draw a slanted line in the upper left quadrant of a "+," it becomes the number 4 and the equation thusly becomes 5 + 545 + 5 = 555.

• 10. -3. You'd be forgiven for thinking that the answer was 3. However, since the number alongside x is negative, we need x to be negative as well in order to get to 0. Therefore, x has to be -3.