Fill in the empty squares with the digits 1-4. Do not repeat digits within the same row, column, or darkened boxes.
In this partially completed pyramid, each rectangle is to be filled with the sum of the two numbers in the rectangles immediately below it.
What number should replace x?
Among the children in a certain family, each child has at least one brother and at least one sister.
What is the smallest possible number of children in the family? A. 2
Which of these diagrams can be drawn without taking the pen off the page, and without drawing along a line that's already been drawn?
3) The word “thirty” contains 6 letters, and 30 = 6 × 5. Similarly, the word “forty” contains 5 letters, and 40 = 5 × 8.
Which of the following is not a multiple of the number of letters it contains? A. six
The diagrams show three different views of the same cube. Which letter is on the face opposite of U?
The numbers are arranged according to a certain rule. Once you've worked out the rule, fill in the missing number. The number seven in the final circle is not a typographical error.
You and Margaret have the same amount of strawberries. How many does Margaret need to give you in order for you to have 10 more strawberries than her?