In the following letter sequence, how many n's are followed by m but not preceded by h ? a g r h t n m b c n m l b u v n m h e r h n m g f e h n m e c n m w q a n m h l b
If it is possible to make a meaningful word with the fourth, the eighth and the tenth letters of the word 'COUNTERACT', which of the following will be the last letter of that word ? If no such word can be made, give X as the answer. If more than one such word can be made, give M as the answer.