6
2x
What is the missing number in this logical series? 1, 2, 6, 42, 1806,______???? Its 3263442, you square the number then add the original unsquared number to the squared value, and so forth.
120. The numbers are factorials: 1, 1x2, 1x2x3, etc.
Well, let's take a moment to appreciate the beauty of this pattern. If we look closely, we can see that each number is increasing by multiplying the previous number by a certain value. The missing numbers are 8 and 41, obtained by multiplying 2 by 4 to get 8, then multiplying 5 by 8 to get 40 and adding 1 to get 41.
6
8+6+5--19
The spacing is 6 1+6=7 7+6=13 13+6=19 19+6=25 so the missing number in the sequence is 13
14
-6
2x
64 is missing; the numbers are cubes of 1,2,3,4,5,& 6.
0 is the missing number.
What is the missing number in this logical series? 1, 2, 6, 42, 1806,______???? Its 3263442, you square the number then add the original unsquared number to the squared value, and so forth.
6
A 6 should be placed between the fours.
The sequence has the formula is 3x - 1 2 → 6 - 1 = 5 5 →15 - 1 = 14 14 →42 -1 = 41 41 → 123 - 1 = 122 The missing number is therefore 41.