Directions: Identify the missing term that correctly completes the following sequence.

BCD15, EFG30, HIJ60, ?, NOP240

The correct option is KLM120.

To identify the missing term that completes the given sequence, we can break each term down into two parts: the letter component and the number component, and analyze their patterns separately.

1. Pattern in the Letter Component:
The letter component consists of groups of three consecutive letters in alphabetical order, moving continuously from one term to the next:
• First term: BCD (2nd, 3rd, 4th letters of the alphabet)
• Second term: EFG (5th, 6th, 7th letters of the alphabet)
• Third term: HIJ (8th, 9th, 10th letters of the alphabet)
• Fourth term (Missing): The three consecutive letters immediately following J are KLM.
• Fifth term: NOP (14th, 15th, 16th letters of the alphabet)

2. Pattern in the Number Component:
Each number in the sequence is obtained by multiplying the preceding number by 2:

$15\times 2=30$

$30\times 2=60$

$60\times 2=120$

$120\times 2=240$

Combining the letter part (KLM) and the numerical part (120) gives the missing term KLM120.