21
14
It is almost the Fibonacci sequence, which is 0 1 1 2 3 5 8 13 21 34 55 ...1 + 2 = 32 + 3 = 53 + 5 = 85 + 8 = 13So, the sequence is 1 2 3 5 8 13
The missing number is 49. This is why: 1 plus 2 equals 3, then 3 squared is 9. 2 plus 3 equals 5, then 5 squared is 25. Therefore, the missing number must be 49 to make the number sentence (3 plus 4 equals 7, then 7 squared is 49) true.
There is no missing number. The Fibonacci sequence continues: 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, ...
21
The missing number is 1321!!! Simple Fibonacci row! 0+1=1 1+1=2 1+2=3 2+3=5 3+5=8 5+8=13 8+13=21 13+21=34 ......
The missing number is 5. When a number is divided by 3, the remainder is 2. So, the number can be represented as 3n + 2, where n is an integer. If we add 3 to this number, the remainder will be 1. Therefore, the missing number is 3n + 2 + 3 = 3n + 5, where n is an integer.
As a product of its prime factors: 2*3*5*7 = 210
14
It is almost the Fibonacci sequence, which is 0 1 1 2 3 5 8 13 21 34 55 ...1 + 2 = 32 + 3 = 53 + 5 = 85 + 8 = 13So, the sequence is 1 2 3 5 8 13
There are 2 missing. The sequence is 1,1,2,3,5,8,13,21. the equation is na=na-1+na-2. 1+1=2,+1=3,+2=5,+3=8,5=13,+8=21 The numbers you are missing are 1 and 8
The sequence is 1,2,3,5,8,13,21.......8 is the missing number. This is known as a Fibonacci Sequence. The first two numbers are supplied and then further numbers in the sequence are formed from the sum of the two prior numbers. 3 = 1 + 2 5 = 2 + 3 8 = 3 + 5.....and so on.
This missing number is 5
21 between 13 and 34; it is the Fibonacci numbers where each successive number is the sum of the previous two.
The missing number is 49. This is why: 1 plus 2 equals 3, then 3 squared is 9. 2 plus 3 equals 5, then 5 squared is 25. Therefore, the missing number must be 49 to make the number sentence (3 plus 4 equals 7, then 7 squared is 49) true.
The first five prime numbers starting from 1 are 1, 2, 3, 5, 7. So 2 is the missing number.