Which set of symbols should replace the question marks? (Two sets of 12 circles are shown; the second set has its bottom six circles hidden.) Choose from the options labelled in the figure.
The institution houses collections of objects of artistic, historic and scientific interest, ___ and displayed for the edification and enjoyment of the public. One word has been removed from the passage. Which word belongs in the gap?
Which two symbols are missing? (A line of symbols is shown with a gap marked ?, followed by options a to e.) Choose from the options labelled in the figure.
The top set of six numbers has a relationship to the set of six numbers below. The two sets on the left have the same relationship as the two sets on the right. Which set of numbers replaces the question marks? Choose from the options labelled in the figure.
An electrical circuit wiring four lights depends on switches A, B, C and D. A toggles lights 1 and 2, B toggles lights 2 and 4, C toggles lights 1 and 3, D toggles lights 3 and 4 (on becomes off and off becomes on). Switches C, B, D and A are thrown in turn and Figure 1 becomes Figure 2. One switch is not working. Which one?
An electrical circuit wiring four lights depends on switches A, B, C and D. A toggles lights 1 and 2, B toggles lights 2 and 4, C toggles lights 1 and 3, D toggles lights 3 and 4 (on becomes off and off becomes on). Switches B, C, A and D are thrown in turn and Figure 1 becomes Figure 2. One switch is not working. Which one?