**Number Puzzles Riddles With Answers 1 : Pyramid Number Puzzle**
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The below is a number puzzle. It should be read left to right, top to bottom.

1

1 1

2 1

1 2 1 1

1 1 1 2 2 1

? ? ? ? ? ?

? ? ? ? ? ? ? ?

Question 1: What is the next two rows of numbers?

Question 2: How was this reached?

Answer & Explanation

**Solution:**

Popular Number Sequence Puzzle

3 1 2 2 1 1

1 3 1 1 2 2 2 1

Line 1 is 'Two ones' (2 1)

Line 2 then becomes 'One two, and one one' (1 2 1 1)

Line 3 therefore is 'One one, one two and two ones' (1 1 1 2 2 1)

Line 4 is 'Three ones, two twos and one one' (3 1 2 2 1 1)

Line 5 is 'One three, one one, two twos and two ones' (1 3 1 1 2 2 1 1)

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**Number Puzzles Riddles With Answers 2 : Logical Number Series Riddle**
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Solve this logical number series puzzle by replace question mark with the correct number

9090 = 4

1234 = 0

6055 = 2

9081 = 4

8888 = ?

Answer & Explanation

**Solution:**

8

No Of circles in the number.

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**Number Puzzles Riddles With Answers 3 : Find The Next Number**
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What are the next three numbers in this series?

4, 6, 12, 18, 30, 42, 60, 72, 102, 108, ?, ?, ?

Answer & Explanation

**Solution:**

The series lists numbers that are flanked by two prime numbers.

4 (3 and 5 are prime)

6 (5 and 7 are prime)

12 (11 and 13 are prime)

18 (17 and 19 are prime)

30 (29 and 31 are prime)

42 (41 and 43 are prime)

60 (59 and 61 are prime)

72 (71 and 73 are prime)

102 (101 and 103 are prime)

108 (107 and 109 are prime)

thus

138 (137 and 139 are prime), 150 (149 and 151 are prime), 180 (179 and 181 are prime

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**Number Puzzles Riddles With Answers 4 : Find Next Number**
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What is the next number?

77, 49, 36, 18 ?

Answer & Explanation

**Solution:**

The next one is 8

77 : 7*7 = 49

49 : 4*9 = 36

36 : 3*6 = 18

18 : 1*8 = 8

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**Number Puzzles Riddles With Answers 5 : Sequence Quiz**
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Find Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Answer & Explanation

**Solution:**

'2'

This single sequence in fact consists of two sequences: the first sequence is 2-3-4-5-... and the second sequence is 9-18-36-72-... . To make the puzzle harder, all digits have been placed apart. Conclusion: the next term in the sequence is a '2'.

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**Number Puzzles Riddles With Answers 6 : Number Series**
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What is the next number in this series, 1, 11, 21, 1211, 111221 , 312211 ?

Answer & Explanation

**Solution:**

Next in sequence is 13112221.

This series describes each number that came before it:

1 [One]

11 [One One]

21 [Two One(s)]

1211 [One Two and One One(s)]

111221 [One One, One Two, and Two One(s)]

312211 [Three One(s), Two Two(s), and One One]

The next number in the series is:

13112221 [One Three, One One, Two Two(s), Two One(s)]

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**Number Puzzles Riddles With Answers 7 : Number Series Question**
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Identify the next two numbers in this series?

101, 112, 131, 415, 161, 718, ???, ???

Answer & Explanation

**Solution:**

192 021

If you look at it as two-digit numbers you'll see:10 11 12 13 14 15 16 17 18 19 20 21

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**Number Puzzles Riddles With Answers 8 : Number Series Problem**
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What number comes next in this sequence:

7 8 5 5 3 4 4 ?

Answer & Explanation

**Solution:**

6- the number of letters in the month august; (January has 7 letters, February has 8 etc.)

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**Number Puzzles Riddles With Answers 9 : Hard Number Series Problem**
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Can you find the next number in the below sequence

3 , 7 , 10 , 11 , 12 , 17 ?

Answer & Explanation

**Solution:**

20(Twenty) : when you write them , these are only numbers having vowel 'E'

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**Number Puzzles Riddles With Answers 10 : Logical Number Series**
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Find the next number in this series.

6 14 36 98 ?

Answer & Explanation

**Solution:**

276

6 = 11 + 21 + 31

14 = 12 + 22 + 32

36 = 13 + 23 + 33

98 = 14 + 24 + 34

276 = 15 + 25 + 35

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**Number Puzzles Riddles With Answers 11 : Hard Number Sequence Riddle**
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Find the next number in the sequence

5 12 24 36 ?

Answer & Explanation

**Solution:**

50

sum of consectuve prime numbers

(2+3 , 5+7 , 11+13 , 17+19 , 23+27)

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**Number Puzzles Riddles With Answers 12 : Picture Number Pattern Sequence**
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Whats the next number in the below number sequence pattern.

Answer & Explanation

**Solution:**

1113213211

its like you call it out

one one => 11

two one => 21

and so on

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**Number Puzzles Riddles With Answers 13 : Hard Number Series Aptitude Riddle**
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What is the next number in the series.

15 29 56 108 208 ?

Answer & Explanation

**Solution:**

400

Explanation:

15

2*15-1 => 29

2*29-2 => 56

2*56-4 => 108

2*108-8 => 208

2*208-16 => 400

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**Number Puzzles Riddles With Answers 14 : Tricky Number Series Riddle**
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Analyze the series below and find out the next number.

5, 25, 325, 4325, __?

Answer & Explanation

**Solution:**

54324

Consider 1 = 5

2 = 25

3 = 325

4 = 4325

Then 5 = 54325

With every digit, the previous numbers are added after that digit

So the answer is 54325

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**Number Puzzles Riddles With Answers 15 : Difficult Number Series**
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Find the next number in the series ?

1 10 24 43 67 ?

Answer & Explanation

**Solution:**

96

Difference between two numbers are

9,14,19,24,29.

Difference between every consecutive number is 5.

So next number is 67+29=96

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**Number Puzzles Riddles With Answers 16 : Hard Math Sequence Puzzle**
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Find the next number in the sequence ?

2 3 3 5 5 4 7 5 11 6

Answer & Explanation

**Solution:**

13 8 its prime number and then number of letter in prime number

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**Number Puzzles Riddles With Answers 17 : Find next number in series**
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What are the next two numbers in this sequence?

7, 14, 17, 21, 27, 28, 35, 37, ?, ?

Answer & Explanation

**Solution:**

42, 47.

They are the numbers that either contain the digit 7 or are divisible by 7.

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**Number Puzzles Riddles With Answers 18 : CAT Exam Puzzle**
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5+3+2 = 151022

9+2+4 = 183652

8+6+3 = 482466

5+4+5 = 202541

THEN ;

7+2+5 =

Answer & Explanation

**Solution:**

7*2 , 7*5 , 7*2 + 7*5 -2

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**Number Puzzles Riddles With Answers 19 : Missing Number in this Sequence**
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Can you discover the missing number in this series?

37, 10, 82

29, 11, 47

96, 15, 87

42, ?, 15

Answer & Explanation

**Solution:**

The missing number is 6.

The number in the middle of each triple is the same as the digits of either end's number when added together. 3+7=10=8+2 and so on.

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**Number Puzzles Riddles With Answers 20 : Toughest Series Puzzle**
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What is the next number in this series?

4,12,84,3612....

Answer & Explanation

**Solution:**

6526884. To get from 4 to 12, you use the following formula. 12 = (4 squared)/2 + 4.

Continue on with (X^2)/2 + X.

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