IBM Company Verbal Ability Miscellaneous

Which one is correct?
Name is Mr.Roger Smith and he is president also.


1)Dear Mr.Smith:
2)Dear Mr.Roger,
3)Dear Mr.Roger Smith:
4)Dear President Smith;
5)Dear Smith:

Read Solution (Total 22)

IBM Other Question

The formal business letter contains

1)Regards
2)Sincerely
3)Respectfully
4)2&3
5)all the above
49,6,25,4,36,5,81,5,?

Can anybody give me the proper answer with explanation?