IBPS RRB Officer Prelims 16 Sep 2017 Paper

If it is possible to make only one meaningful English word with the first, the second, the fourth and the eighth letters of the word STEROIDAL using each letter of the word only once, when counted from left to right, which of the following will be the fourth letter of the word so formed from the right end. If no such wordcan be formed give X as youranswer. If more than onesuch word can be formed, giveZ as your answer.