Question

In the following question, a number series is given with one term missing. Choose the correct alternative that will continue the same pattern and replace the question mark (?) in the given series.
4, 6, 9, 13.5, ___}

• A. 17.5
• B. 19.0
• C. 20.25
• D. 22.75

Hint:

If differences are not consistent, check for \textbf{multiplication patterns} like $\times 1.5$, $\times 2$, etc.

Answer 1

The Correct Option is C

Concept: Check for a multiplicative pattern. Step 1:Observe the pattern: \[ 4 \times 1.5 = 6 \] \[ 6 \times 1.5 = 9 \] \[ 9 \times 1.5 = 13.5 \]
Step 2:Continue the pattern: \[ 13.5 \times 1.5 = 20.25 \]
Step 3:Final Answer: \[ \text{20.25} \]