FLT 1 - Number Series (Q39): What will come in place of the question mark (?) in the following series? 57, 73, 105, ?, 217

Subject: Quantitative Aptitude | Topic: Number System | Difficulty: MEDIUM

Options

1. (A) 153
2. (B) 151
3. (C) 156
4. (D) 148
5. (E) 161

Verified Answer

Option (A): 153

10-Second Shortcut Trick

⚡ 10-Second Exam Shortcut: Eliminate options ending in incorrect units or calculate unit digits first before solving full arithmetic.

Step-by-Step Derivation

1. Analyze the given condition or equation.
2. Apply the standard formula or deduction rules.
3. Correct choice is (A): 153

Common Trap to Avoid

⚠️ Common Trap: Misreading inverse proportions or rushing calculation in the last algebraic step.

Exam Tip

💡 Exam Tip: Always verify if question asks for perimeter, area, or remaining fraction.

Related Practice Questions in Number System

• If the 4-digit number x67y is exactly divisible by 9, then the least value of (x + y) is_____.
• Which of the following pairs of non-zero values of p and q make the 6-digit number 674pq0 divisible by both 3 and 11?
• The HCF of two numbers 110 and 1980 is:
• 6^25 + 6^26 + 6^27 + 6^28 is divisible by:

Practice more Number System questions in SSC CGL Complete Test Series 2026.

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