Question

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series: TDGJ, TGMS, TJSB, TMYK, ?

• A. TEFY
• B. TESD
• C. TESO
• D. TPET

Answer 1

Answer:

D. TPET

Let's analyze the series:

TDGJ, TGMS, TJSB, TMYK, ?

Notice that the first letter remains constant:

• T, T, T, T → next is T

Now look at the remaining letters:

Term	2nd	3rd	4th
TDGJ	D	G	J
TGMS	G	M	S
TJSB	J	S	B
TMYK	M	Y	K

2nd letters

D → G → J → M → P (+3 each time)

3rd letters

G → M → S → Y → E (+6 each time, wrapping after Z)

4th letters

J → S → B → K → T (+9 each time, wrapping after Z)

So the next term is:

$\boxed{\text{TPET}}$

Answer: TPET.