### #1 - Pyramid Number Puzzle

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?

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)

### #2 - Sound Riddle

Can you figure out the logic I used to decide the order of the following words:

gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

Each word rhymes with its numeric position in the list. (e.g. 'gun' rhymes with 'one', etc.)

### #3 - Puzzle In A Puzzle

What are the next two letters in the following series and why?
W A T N T L I T F S _ _
*Hint: Check Puzzle Title

The letters are the first letters of the words in the question. Thus, the next two letters are A and W.

### #4 - Logical Number Series Riddle

Solve this logical number series puzzle by replace question mark with the correct number
9090 = 4
1234 = 0
6055 = 2
9081 = 4
8888 = ?

8
No Of circles in the number.

### #5 - Upsc Puzzle Question

The question that follows came in the UPSC final exam that was held in December 2013. Only one examinee i.e. Gaurav Agarwal was able to solve it. Can you solve it?

? + ? + ? + ? + ? = 30

You have to fill numbers in place of question marks. The numbers that you can use are 1, 3, 5, 7, 9, 11, 13 and 15. You can repeat the numbers if you like.

(15 - 9) + (13 - 7) + (7 - 1) + (9 - 1) + (13 - 9)

If you calculate it, you will get
6 + 6 + 6 + 8 + 4 = 30

### #6 - Upsc Picture Series Puzzle

Can you solve below logical number series puzzle.

11.3135 + 9.3115+ 9.375

### #7 - Find The Next Number

What are the next three numbers in this series?

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

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

### #8 - Find Next Number

What is the next number?

77, 49, 36, 18 ?

The next one is 8
77 : 7*7 = 49
49 : 4*9 = 36
36 : 3*6 = 18
18 : 1*8 = 8

### #9 - Sequence Quiz

Find Next Number in the Sequence
2 9 3 1 8 4 3 6 5 7 ?

'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'.

### #10 - January Series Puzzle

Find The Next Number In Series ?
100 365 24 60 ?
*Hint : Timing is everything

60. 100 years in a century, 365 days in a year, 24 hours in a day, 60 minutes in an hour, & 60 seconds in a minute.