Graphite belongs to which category?
Isn't graphite a semi-Conductor? âââââââââââââââââââââ
Which of the following letters will replace the '?' to complete the given series?
b is the correct answer ( DW)
The correct answer is B because the first combination consists of the first letter from the starting and the first letter from the ending. The second combination consists of the second letter from the ending and the second letter from the starting and so on. So, the fourth combination with consist of the fourth letter from the starting and the fourth letter from the ending.