Look at the given number pattern.
3, 7, 15, 31, 63, .....
What is the 7th term in the pattern ?
The change in the number of water plants in four ponds, P, Q, R and S, over four months is shown in the graph. Which pond is the most polluted?
Shikha arranged four magnets such that one end of each magnet was attracted to its neighbouring magnet as shown in the given figure.
Which of the following is another possible arrangement?