Question

Find the missing term in the following sequence.
Q1F, ? , U6D , W21C , Y88B , A445A

• A. S2E
• B. S3E
• C. S4E
• D. T2E
• E. T2F

Answer 1

The correct option is A

S2E

Q$\stackrel{+2}{\to }$S$\stackrel{+2}{\to }$U$\stackrel{+2}{\to }$W$\stackrel{+2}{\to }$Y$\stackrel{+2}{\to }$A

The numbers follow the pattern :

1*1+1=2,

2*2+2=6,

6*3+3=21,

21*4+4=88

88*5+5 = 445

The letters at the end of each term are in descending order starting from F.