The Dech Maths Challenge

39 Questions | Total Attempts: 146

SettingsSettingsSettings
Please wait...
The Dech Maths Challenge

This is the last edition of the Dech Maths challengeInstructions- Attempt all questions- The challenge lasts for 1 hour and 30 minutes. - Once a question has been answered you will not be able to attempt it again. - Once you click on an answer it will be recorded straight away, take care before you make a selection- There will be NO negative marking. If you do not know the answer to a question, simply select your best guess and move on to the next question. - A calculator is not essential but can be used, make sure you have paper and a pen for rough calculations- If you pass the challenge, you will be given the option to download a certificate. Feel free to print and laminate this certificate. - If your internet connection fails, do NOT close your browser, simply reconnect and retry the a


Questions and Answers
  • 1. 
    What is your date of birth?(Use the following format: 7th February 1992, 23rd November 1956)  
  • 2. 
    How old are you?(e.g. 15 years)
  • 3. 
    An airplane takes off from Murtala Muhammed International airport at 10am on Feb 7th, 2015. Given that the average speed of the airplane throughout the journey is 800 km/hr, and it travels a distance of 4800 km. At what time does the plane reach its destination?
    • A. 

      4pm

    • B. 

      4am

    • C. 

      10pm

    • D. 

      6pm

  • 4. 
    A vehicle has a 100 litre fuel tank capacity. If the vehicle consumes 10 litres per 100km, what is the maximum distance that can be covered by the vehicle on a full tank?
    • A. 

      400 km

    • B. 

      1,000 km

    • C. 

      100 km

    • D. 

      250 km

  • 5. 
    A company makes a pre-tax profit of $10,000,000. If the corporate tax rate is 25%, how much tax will the company pay?
    • A. 

      $12,500,000

    • B. 

      $7,500,000

    • C. 

      $2,500,000

    • D. 

      $75,000

  • 6. 
    A company makes a pre-tax profit of $10,000,000. If the corporate tax rate is 25%, what is the company’s profit after tax?(This question tests your understanding of percentages)
    • A. 

      $2,500,000

    • B. 

      $12,500,000

    • C. 

      $100,000

    • D. 

      $7,500,000

  • 7. 
    A bag contains 40 balls. 11 red balls, 9 blue balls, 12 green balls and 8 yellow balls. If a single ball is selected at random from the bag, it will most likely be
    • A. 

      A red ball

    • B. 

      A blue ball

    • C. 

      A yellow ball

    • D. 

      A green ball

  • 8. 
    A mobile app (application) is being downloaded onto a smartphone, if it takes 1 second to download 10% of the mobile application. Estimate the total time it takes to download the complete app? 
    • A. 

      10 seconds

    • B. 

      100,000 seconds

    • C. 

      1,000 seconds

    • D. 

      10,000 seconds

  • 9. 
    If Linda and Megan shared 8 pancakes in the ratio 1:3 respectively, how many pancakes did Megan receive?
    • A. 

      6

    • B. 

      1

    • C. 

      3

    • D. 

      4

  • 10. 
    Bawo and Amole share sweets in a certain ratio. After sharing the sweets, Bawo has 10 sweets and Amole has 2 sweets. What is the ratio of the number of sweets received by Bawo to the number of sweets received by Amole?
    • A. 

      5:1

    • B. 

      2:3

    • C. 

      9:8

    • D. 

      4:1

  • 11. 
    The locations of 3 houses in a neighbourhood are shown below. The shortest distance between house A & house B is 300 metres while the shortest distance between house B and house C is 500 metres, what is the shortest distance between house A & C? (Houses A, B & C lie on the vertices of the given right angle triangle below)
    • A. 

      800 metres

    • B. 

      350 metres

    • C. 

      400 metres

    • D. 

      200 metres

  • 12. 
    What percentage of 10 days is 24 hours?
    • A. 

      10%

    • B. 

      24%

    • C. 

      15%

    • D. 

      9%

  • 13. 
    The sum of two numbers is 12 and their product is 20. The two numbers are
    • A. 

      5 & 7

    • B. 

      6 & 8

    • C. 

      4 & 8

    • D. 

      2 & 10

  • 14. 
    What is the next number in the following sequence?2,5,8,11,....
    • A. 

      14

    • B. 

      12

    • C. 

      13

    • D. 

      15

  • 15. 
    What is the next number in the following sequence?1,5,13,29,......
    • A. 

      42

    • B. 

      45

    • C. 

      61

    • D. 

      69

  • 16. 
    What is the product of the numbers below?-1,-1 & -1
    • A. 

      -1

    • B. 

      -5

    • C. 

      1

    • D. 

      5

  • 17. 
    A pack of chocolate contains 50 individual chocolate bars. A basket contains 3 packs of chocolate. What is the total number of individual chocolate bars in 10 baskets?
    • A. 

      150

    • B. 

      500

    • C. 

      1,500

    • D. 

      5,000

  • 18. 
    In a certain women’s sports league, the current standings of the top 3 teams are shown below.Matches in the sport are such that, a win is rewarded with 5 points, a draw is rewarded with 2 points and a loss is rewarded with 0 points. At the conclusion of the league every team would have played 10 matches.What is the maximum possible points tally that team B can finish the league with?
    • A. 

      42

    • B. 

      45

    • C. 

      50

    • D. 

      48

  • 19. 
    In a certain women’s sports league, the current standings of the top 3 teams are shown below.Matches in the sport are such that, a win is rewarded with 5 points, a draw is rewarded with 2 points and a loss is rewarded with 0 points. By the end of the league every team would have played 10 matches.What is the maximum possible points tally that team C can finish the league with?
    • A. 

      47

    • B. 

      42

    • C. 

      44

    • D. 

      37

  • 20. 
    £50,000 is invested for 2 years. At the end of each year, the investor makes a 10% profit of the investment's value at the start of that year. How much does the investor have at the start of year 3?(Assume the £50,000 is invested at the start of year one)
    • A. 

      £60,000

    • B. 

      £50,000

    • C. 

      £55,000

    • D. 

      £60,500

  • 21. 
    In a certain women’s sports league, the current standings of the top 3 teams are shown below.Matches in the sport are such that, a win is rewarded with 5 points, a draw is rewarded with 2 points and a loss is rewarded with 0 points. By the end of the league every team would have played 10 matches. Team C has 2 matches left. 2 sample unique outcomes are shown below:Outcome 1: Win then DrawOutcome 2: Draw then WinHow many sets of unique outcomes will result in team C having the most points at the end?( Assume that team B will win its last game)
    • A. 

      9

    • B. 

      1

    • C. 

      7

    • D. 

      3

  • 22. 
    In a certain women’s sports league, the current standings of the top 3 teams are shown below.Matches in the sport are such that, a win is rewarded with 5 points, a draw is rewarded with 2 points and a loss is rewarded with 0 points. By the end of the league every team would have played 10 matches. Team C has 2 matches left. 2 sample unique outcomes are shown below:Outcome 1: Win then DrawOutcome 2: Draw then WinHow many sets of unique outcomes will result in team C not having the most points at the end?( Assume that team B will win its last game)
    • A. 

      9

    • B. 

      7

    • C. 

      8

    • D. 

      5

  • 23. 
    Consider the statement below.y>2x+1The above statement means that the value of y must be greater than the value of (2 multiplied by x, plus 1)For which values of x & y is the statement above false?
    • A. 

      x=3 & y=10

    • B. 

      x=-12 & y=0

    • C. 

      x=-10 & y=1

    • D. 

      x=4 & y=8

  • 24. 
    A heavy metallic ball and a light feather are dropped from the top of a building at the same time, from the same height and with the same initial speed. The speed of both the ball and the feather are the same throughout the downward journey. For the described scenario which one of the following statements is true?
    • A. 

      The metallic ball gets to the ground before the feather

    • B. 

      The feather gets to the ground before the ball

    • C. 

      The ball and feather get to the ground at the same instant

    • D. 

      None of the above

  • 25. 
    If the perimeter of a square is 8cm, what is the area of the square?
    • A. 

      8 square centimeters

    • B. 

      4 square centimeters

    • C. 

      2 square centimeters

    • D. 

      16 square centimeters

Back to Top Back to top