The first five prime numbers starting from 1 are 1, 2, 3, 5, 7. So 2 is the missing number.
2x
The smallest number that is divisible by 5, 6, and 7 is 210.
The number is 27. (33) The sequence shows the lowest 7 nonzero values for the exponential series nn, i.e. 1 to the first power, 2 to the 2nd power, up to 7 to the 7th power. 1*1=1 2*2=4 3*3*3=27 4*4*4*4=256 5*5*5*5*5=3125 6*6*6*6*6*6=46656 7*7*7*7*7*7*7=823543
840 is the smallest number that is divisible by 5 6 7 and 8.
This missing number is 5
0 is the missing number.
14
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
17 :)
The first five prime numbers starting from 1 are 1, 2, 3, 5, 7. So 2 is the missing number.
-6
2x
3 Because the numbers 7 8 9 form a different series Think of it without those and you get : 6 5 4 3
I'm assuming the missing Arithmetic operators in the question, is as shown in my answer? (7 × 8) + (5 × 6) = 86
7 6,7,8,9,10
The number is 2 because (6*2)-5 = 7