Question

Which of the following terms will replace the question mark (?) in the given series to make it logically complete? TBR 23 RFO 12 PJL 1 NNI −10 ?

• A. LRE −21
• B. LRF −21
• C. KRE −19
• D. KRF −19

Answer 1

Answer:

B. LRF −21

The term that will replace the question mark (?) to make the series logically complete is LRF −21.

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1. The Letter Patterns

• First Letter: T $\rightarrow$ R $\rightarrow$ P $\rightarrow$ N $\rightarrow$ ?

  • Pattern: Decreasing by 2 positions in alphabetical order (20, 18, 16, 14, ...).

  • Next letter: 14 - 2 = 12 $\rightarrow$ L

• Second Letter: B $\rightarrow$ F $\rightarrow$ J $\rightarrow$ N $\rightarrow$ ?

  • Pattern: Increasing by 4 positions in alphabetical order (2, 6, 10, 14, ...).

  • Next letter: 14 + 4 = 18 $\rightarrow$ R

• Third Letter: R $\rightarrow$ O $\rightarrow$ L $\rightarrow$ I $\rightarrow$ ?

  • Pattern: Decreasing by 3 positions in alphabetical order (18, 15, 12, 9, ...).

  • Next letter: 9 - 3 = 6 $\rightarrow$ F

Combining the letters gives LRF.

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2. The Number Pattern

The numbers in the series are: 23, 12, 1, -10, ?

• Pattern: Subtracting 11 from the previous number.

  • $23 - 11 = 12$

  • $12 - 11 = 1$

  • $1 - 11 = -10$

  • $-10 - 11 = \mathbf{-21}$

Combining both parts, the complete next term is LRF −21.