SSC CGL Preparation – Day 3

📘 MCQ Set: Series Completion

Number Series

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Q1. Find the missing number in the series:
3, 6, 11, 18, 27, ?

A) 35
B) 36
C) 38
D) 40

Answer: C) 38
Explanation:
+3, +5, +7, +9, +11 → Next: 27 + 11 = 38

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Q2. What comes next?
2, 4, 8, 16, ?

A) 32
B) 30
C) 24
D) 18

Answer: A) 32
Explanation:
×2 pattern → 16 × 2 = 32

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Q3. Find the next term:
1, 4, 9, 16, 25, ?

A) 35
B) 36
C) 49
D) 45

Answer: B) 36
Explanation:
1², 2², 3²… → 6² = 36

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Q4. What comes next?
121, 144, 169, 196, ?

A) 221
B) 225
C) 210
D) 245

Answer: B) 225
Explanation:
11², 12², 13², 14² → 15² = 225

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🔤 Alphabet Series

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Q5. Fill in the blank:
A, C, F, J, O, ?

A) S
B) U
C) W
D) V

Answer: C) W
Explanation:
+2, +3, +4, +5, +6 → A(1), C(3), F(6), J(10), O(15), ? = 21 (U) → W (23) is next in the +7 sequence

Correction:
Actually, the correct pattern is
+2 (A→C), +3 (C→F), +4 (F→J), +5 (J→O), +6 → O(15) +6 = U (21)
Answer: B) U

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Q6. Find the next letter:
Z, X, V, T, ?

A) Q
B) R
C) S
D) U

Answer: B) R
Explanation:
Reverse alphabet skipping 1 → Z(26), X(24), V(22), T(20), ? = R(18)

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🔢 Alphanumeric Series

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Q7. Complete the series:
A1, B2, C3, D4, ?

A) E4
B) D5
C) E5
D) F5

Answer: C) E5
Explanation:
Sequential letters + increasing digits → Next = E5

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Q8. What comes next?
2A, 4C, 6E, 8G, ?

A) 10H
B) 10I
C) 10J
D) 10K

Answer: B) 10I
Explanation:
Even numbers + every 2nd letter (A, C, E, G…) → Next: 10I

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🔁 Mixed Series

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Q9. Find the missing number:
5, 10, 20, 40, ?, 160

A) 70
B) 60
C) 80
D) 90

Answer: C) 80
Explanation:
×2 series → Next: 40 × 2 = 80

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Q10. Choose the next in the series:
1, 2, 6, 24, 120, ?

A) 240
B) 720
C) 600
D) 840

Answer: B) 720
Explanation:
Factorial series: 1! = 1, 2! = 2, 3! = 6, … → 6! = 720