### #1 - 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)

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)

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?

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)

Find the missing number in the image below ?

6

sum of opposite number is 21

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

Find The Next Number in this series ?

1, 2, 6, 42, 1806 ?

3263442

each number is multiplied by the number+1

1x2 = 2

2x3 = 6

6x7 = 42

42x43 = 1806

1806x1807 = 3263442

Replace the question mark with the correct number.

4

6*3 equals 18

7*9 equals 63

6*4 equals 24

7*6 equals 42, ? shud b replcd by 4."

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

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)]

What Number Should Replace The Question Mark In The Circle Below ?

17

It is the sum of the two digits(9 + 8) in opposite quadrant.

What letter is next in this sequence?

M, A, M, J, J, A, S, O,__

N for November!

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.