If three matchsticks are used to form an alphabet 'H', how many matchsticks are required to form 'd' number of H's?
Observe the pattern of digits made using matchsticks. How many matchsticks are required to form sixth level of the same kind?
Observe the pattern of the letters made using matchsticks. How many matchsticks are required to form the sixth element of this pattern?
Four matchsticks are required to make the alphabet 'E'. Eight are required for two 'E's and so on. The number of matchsticks required to make n 'E's is ___.