📘 BANK EXAM SPEED MATHS – PAGE 18

🔹 Missing Number Tricks

Missing number questions test pattern recognition skills. Focus on differences, multiplication, and square/cube patterns.

✅ Trick 1: Difference Pattern

Example: 3, 7, 13, 21, ?

• Differences: 4, 6, 8
• Next difference = 10
• Answer = 21 + 10 = 31

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✅ Trick 2: Multiplication Pattern

Example: 2, 6, 18, 54, ?

• ×3 pattern
• Next = 54 × 3 = 162

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✅ Trick 3: Square/Cube Pattern

Example: 1, 8, 27, 64, ?

• 1³, 2³, 3³, 4³
• Next = 5³ = 125

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🔹 Coding Pattern Tricks

✅ Trick 4: Alphabet Position Method

A = 1, B = 2, ..., Z = 26

Example: CAT = ?

• C = 3, A = 1, T = 20
• Total = 24

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✅ Trick 5: Reverse Coding

Z = 1, Y = 2, ..., A = 26

Example: BAT

• B = 25, A = 26, T = 7
• Total = 58

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✅ Trick 6: Mixed Coding Pattern

Combination of addition, multiplication, or shifting letters.

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🔹 Tough Practice Questions

1. 5, 11, 19, 29, ?
2. 4, 12, 36, 108, ?
3. 1, 4, 9, 16, ?
4. DOG = ? (Alphabet sum)
5. Reverse coding of CAT = ?
6. 3, 9, 27, 81, ?

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🔹 Quick Answers

• 1. 41
• 2. 324
• 3. 25
• 4. 26
• 5. 55
• 6. 243

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🔹 Exam Tips

✔ Focus on pattern recognition
✔ Memorize alphabet positions
✔ Practice different pattern types
✔ Avoid overthinking simple sequences

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