Select the number from among the given options that can…

Question

Select the number from among the given options that can replace the question mark (?) in the following series.
$99, 123, 150, 180, 213, ?$

Select an answer
View Complete Answer & Explanation

Question (English)

Select the number from among the given options that can replace the question mark (?) in the following series.
$99, 123, 150, 180, 213, ?$

  1. 248
  2. 258
  3. 259
  4. 249 ✓ Correct
Explanation:

Let's analyze the difference between consecutive numbers in the series:

  • $123 - 99 = 24$
  • $150 - 123 = 27$
  • $180 - 150 = 30$
  • $213 - 180 = 33$

The differences form an arithmetic progression increasing by 3 at each step ($24, 27, 30, 33$).

Therefore, the next difference should be $33 + 3 = 36$.

Now, add this difference to the last term to find the missing number:

$$213 + 36 = 249$$

प्रश्न (हिंदी)

दिए गए विकल्पों में से उस संख्या का चयन करें जो निम्नलिखित श्रृंखला में प्रश्नवाचक चिन्ह (?) को प्रतिस्थापित कर सकती है।
$99, 123, 150, 180, 213, ?$

  1. 248
  2. 258
  3. 259
  4. 249
स्पष्टीकरण:

आइए श्रृंखला में लगातार संख्याओं के बीच के अंतर का विश्लेषण करें:

  • $123 - 99 = 24$
  • $150 - 123 = 27$
  • $180 - 150 = 30$
  • $213 - 180 = 33$

यहाँ संख्याओं के बीच का अंतर हर चरण में 3 से बढ़ रहा है ($24, 27, 30, 33$)।

इसलिए, अगला अंतर $33 + 3 = 36$ होना चाहिए।

अब, लुप्त संख्या ज्ञात करने के लिए इस अंतर को अंतिम पद में जोड़ें:

$$213 + 36 = 249$$

📚 About this Topic — General Intelligence and Reasoning (2024)-1

This multiple choice question is from General Intelligence and Reasoning (2024)-1. It has 4 options with a detailed explanation of the correct answer and is available in both English and Hindi (द्विभाषी). Practice more MCQs from General Intelligence and Reasoning (2024)-1 to strengthen your preparation.

Author Avatar
Anvi Classes

Anvi classes for Current Affairs, GK, and General Studies MCQs. Prepare for UPSC, SSC, and other competitive exams with our comprehensive quizzes.