Which of the numbers should replace the question mark?
Correct!
Wrong!

Complete the square using the five numbers shown (SUDOKU). When complete no row, column or diagonal line will use the same number more than once. What should replace the question mark?
Correct!
Wrong!

Discover the connection between the letters and the numbers. Which of the numbers will replace the question mark?
Correct!
Wrong!

Which of the boxes should be used to replace the question mark?
Correct!
Wrong!

Scales one and two in perfect balance. Which are these pans should replace the empty one?
Correct!
Wrong!

Insert the correct mathematical signs between each number in order to resolve the equation. What are the signs?
Correct!
Wrong!

Which of the constructed boxes can be made from the pattern?
Correct!
Wrong!

Which of the numbers should replace the question mark?
Correct!
Wrong!

Start at 1 and move from box to touching box. Collect four numbers each time. How many different routes are there to collect 11? A reversed route counts twice.
Correct!
Wrong!

Hown many ways are there to score 25 on this dartboard using three darts only? Each dart always lands in a sector and no dart falls to the floor.
Correct!
Wrong!

Which triangle continues this series?
Correct!
Wrong!

Which of the numbers should logically replace the question mark in the octagon?
Correct!
Wrong!

Here is an usual safe. Each of the buttons must be pressed only once in the correct order to open it. The last button is marked F. The number of moves and the direction is marked on each button. Thus 1i would mean one move in, whilst 1o would mean one move out. 1c would mean one move clockwise and 1a would mean one move anticlockwise. Which button is the first you must press?
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