Hard
Study the code: CLOUD=durxs, MOON=wxxv, SKY=tbh, STAR=pcba, SUN=bwd. What is the code letter of 'U'?
Explanation
Explanation
U is common to CLOUD and SUN. Once S is identified as 'b' in SUN (code bwd), the remaining letters w and d belong to U and N. 'd' also appears in CLOUD's code (durxs), so U must be coded as 'd', leaving N coded as 'w'.
PRO TIP
Re-check your working by substituting the answer back into the original question.