#21 - Number Series

What is the next number in this series, 1, 11, 21, 1211, 111221 , 312211 ?

Number Series

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)]

#22 - Number Series Question

Identify the next two numbers in this series?

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

Number Series Question

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

#23 - Missing Letter Sequence Puzzle

Can you find the missing letter in the sequence ?
S - T - I - L - ? - T - F - Y - C

Missing Letter Sequence Puzzle

The answer is M.

These are letter of the question asked in reverse order.

#24 - Hard Number Series Problem

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Hard Number Series Problem

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

#25 - Hard Number Sequence Riddle

Find the next number in the sequence

5 12 24 36 ?

50

sum of consectuve prime numbers
(2+3 , 5+7 , 11+13 , 17+19 , 23+27)

#26 - Picture Number Pattern Sequence

Whats the next number in the below number sequence pattern.

Picture Number Pattern Sequence

1113213211
its like you call it out

one one => 11
two one => 21
and so on

#27 - Hard Number Series Aptitude Riddle

What is the next number in the series.

15 29 56 108 208 ?

400

Explanation:
15
2*15-1 => 29
2*29-2 => 56
2*56-4 => 108
2*108-8 => 208
2*208-16 => 400

#28 - Hard Math Sequence Puzzle

Find the next number in the sequence ?

2 3 3 5 5 4 7 5 11 6

Hard Math Sequence Puzzle

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

#29 - Hard Logic Image Pattern Puzzle

Find the logic in the figure given and find out the missing one.

Hard Logic Image Pattern Puzzle

Every single symbol is associated with each another's position. If you look closely, you will find out that the upside-down spade symbol is always used on the left of a right-side-up heart.

#30 - Tricky Sequence Problem

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

Tricky Sequence Problem

It's simple. Just put the letter 'F' over the line and it will become E to form the word SEQUENCE.