## 1. Complete the series: A, E, I, ?, U

### Answer:

### Explanation:

The series consists of vowels in alphabetical order.

## 2. Find the missing number: 2, 4, 6, ?, 10

### Answer:

### Explanation:

The series is increasing by 2 each time.

## 3. Complete the series: Cat, Dog, ?, Cow

### Answer:

### Explanation:

The series consists of common domestic animals.

## 4. Identify the missing letter: J, L, N, ?, R

### Answer:

### Explanation:

The series is skipping one letter in the alphabet each time.

## 5. Complete the series: 3, 9, 27, 81, ?

### Answer:

### Explanation:

Each number is multiplied by 3.

## 6. Find the next word: Apple, Banana, ?, Date

### Answer:

### Explanation:

The series consists of fruits in alphabetical order.

## 7. Complete the series: 10, 20, 30, ?, 50

### Answer:

### Explanation:

The series is increasing by 10 each time.

## 8. Identify the missing letter: B, D, F, ?, J

### Answer:

### Explanation:

The series consists of alternate letters in the alphabet.

## 9. Complete the series: Red, Blue, ?, Green

### Answer:

### Explanation:

The series consists of primary colors.

## 10. Find the missing number: 5, 10, 15, ?, 25

### Answer:

### Explanation:

The pattern is adding 5 each time.

## 11. Complete the series: Lion, Tiger, ?, Wolf

### Answer:

### Explanation:

The series consists of large carnivorous mammals.

## 12. Identify the missing letter: A, C, E, ?, I

### Answer:

### Explanation:

The series is skipping one letter in the alphabet.

## 13. Complete the series: 2, 4, 8, 16, ?

### Answer:

### Explanation:

Each number is doubled.

## 14. Find the next word: January, February, ?, April

### Answer:

### Explanation:

The series consists of months in order.

## 15. Complete the series: Circle, Triangle, Square, ?

### Answer:

### Explanation:

The series follows shapes with increasing numbers of sides.

## 16. Identify the missing number: 11, 22, 33, ?, 55

### Answer:

### Explanation:

The pattern is adding 11 each time.

## 17. Complete the series: Monday, Tuesday, ?, Thursday

### Answer:

### Explanation:

The series consists of days of the week in order.

## 18. Find the missing letter: T, R, P, ?, L

### Answer:

### Explanation:

The series is skipping one letter in reverse alphabetical order.

## 19. Complete the series: 100, 90, 80, ?, 60

### Answer:

### Explanation:

The series is decreasing by 10 each time.

## 20. Identify the next word: Sunflower, Rose, ?, Lily

### Answer:

### Explanation:

The series consists of popular flowers.

## 21. Complete the series: 1, 1, 2, 3, 5, ?

### Answer:

### Explanation:

This is the Fibonacci sequence, where each number is the sum of the two preceding ones.

## 22. Find the missing number: 7, 14, 21, ?, 35

### Answer:

### Explanation:

The series is increasing by 7 each time.

## 23. Complete the series: Dog, Cat, ?, Rabbit

### Answer:

### Explanation:

The series consists of common household pets.

## 24. Identify the missing letter: Q, S, U, ?, Y

### Answer:

### Explanation:

The series consists of alternate letters in the alphabet.

## 25. Complete the series: 9, 16, 25, 36, ?

### Answer:

### Explanation:

The series is square numbers. 7^2 = 49.

## 26. Find the next word: Copper, Silver, ?, Platinum

### Answer:

### Explanation:

The series consists of common metals in increasing value.

## 27. Complete the series: 3, 6, 9, 12, ?

### Answer:

### Explanation:

The series is increasing by 3 each time.

## 28. Identify the missing letter: Z, X, V, ?, R

### Answer:

### Explanation:

The series is skipping one letter in reverse alphabetical order.

## 29. Complete the series: Spring, Summer, ?, Winter

### Answer:

### Explanation:

The series consists of seasons in order.

## 30. Find the missing number: 1, 4, 9, ?, 25

### Answer:

### Explanation:

The series is square numbers. 4^2 = 16.

## 31. Complete the series: Bear, Lion, Tiger, ?

### Answer:

### Explanation:

The series consists of large carnivorous mammals.

## 32. Identify the missing letter: L, N, P, ?, T

### Answer:

### Explanation:

The series consists of alternate letters in the alphabet.

## 33. Complete the series: 15, 30, 45, 60, ?

### Answer:

### Explanation:

The series is increasing by 15 each time.

## 34. Find the next word: Honda, Toyota, ?, Ford

### Answer:

### Explanation:

The series consists of popular car brands.

## 35. Complete the series: 2, 3, 5, 7, 11, ?

### Answer:

### Explanation:

The series consists of prime numbers.

## 36. Identify the missing letter: C, F, I, ?, O

### Answer:

### Explanation:

The series is skipping two letters in the alphabet each time.

## 37. Complete the series: 4, 8, 16, 32, ?

### Answer:

### Explanation:

Each number is doubled.

## 38. Find the next word: Pen, Pencil, ?, Marker

### Answer:

### Explanation:

The series consists of common writing or drawing tools.

## 39. Complete the series: 25, 50, 75, 100, ?

### Answer:

### Explanation:

The series is increasing by 25 each time.

## 40. Identify the missing letter: V, T, R, ?, N

### Answer:

### Explanation:

The series is skipping one letter in reverse alphabetical order.

## 41. Complete the series: January, March, May, ?, September

### Answer:

### Explanation:

The series consists of alternate months.

## 42. Find the missing number: 2, 6, 12, 20, ?

### Answer:

### Explanation:

The pattern is n(n+1).

## 43. Complete the series: Rose, Daisy, Tulip, ?, Lily

### Answer:

### Explanation:

The series consists of popular flowers.

## 44. Identify the missing letter: A, D, G, ?, M

### Answer:

### Explanation:

The series is skipping two letters in the alphabet each time.

## 45. Complete the series: 1, 2, 4, 8, 16, ?

### Answer:

### Explanation:

Each number is doubled.

## 46. Find the next word: Oak, Pine, Maple, ?

### Answer:

### Explanation:

The series consists of types of trees.

## 47. Complete the series: 10, 13, 16, 19, ?

### Answer:

### Explanation:

The series is increasing by 3 each time.

## 48. Identify the missing letter: K, M, O, ?, S

### Answer:

### Explanation:

The series consists of alternate letters in the alphabet.

## 49. Complete the series: 36, 30, 24, 18, ?

### Answer:

### Explanation:

The series is decreasing by 6 each time.

## 50. Find the next word: Copper, Bronze, Silver, ?

### Answer:

### Explanation:

The series consists of metals historically used in coinage, in increasing value.