Math
posted by Kel .
What is the units digit of the 100th number in this sequence: 1, 4, 8, 16, 32, 64, ...?

Correct me if I am wrong, but I believe you left out the actual 2nd number in this apparant series. It most likely reads 1248163264128256512etc.
Note that after the first digit, the 1, the units digits follow the pattern of 2, 4, 8, 6 throughout.
Since the repeating series starts with the second number, we divide 99 by 4 = 24.75. The .75 indicates that the units digit of the 99th number of the repeating series, or the 100th number of the entire series, is the 3rd number of the repeating set of 2, 4, 8,6, or 8. 
I think your first number should have been 2
anyway. ... the terms end in digits 2,4,8,6,2,4,6,8
the period is 4, 100 divides evenly by 4, so it ends in the last digit of the repeat which would be 8
Respond to this Question
Similar Questions

math
This is an SAT question of the day that I can't understand. The sum of the digits of a threedigit number is 12. If the hundreds digit is 3 times the tens digit and the tens digit is 1 over 2 the units digit, what is the tens digit … 
Digit Problems
If the tens digit of a twodigit number is subtracted from the units digit, the difference is 8. The number with the digits reversed is 10 more than nine times the units digit of the original number. Find the number. 
ALgebra...plz help
If the tens digit of a twodigit number is subtracted from the units digit, the difference is 8. The number with the digits reversed is 10 more than nine times the units digit of the original number. Find the number. 
algebra
the winninq threedigit number in a drawing for a door prize had the same units and hundreds digit. the product of its units and tens digits was 5 less than twice the sum of its digits. its middle digit was one more than twice its … 
Math  Algebra
What is the linear equation that will represent the second statement in the following problem: "The sum of the digits of a threedigit number is 12. If the hundreds digit is replaced by the tens digit, the tens digit by the units digit, … 
math
A three digit number is eleven times the twodigit formed by using the hundreds and the units digit of the three  digit number respectively, in the tens and units place of the two  digit number. If the difference between the digit … 
Math
The units digit of a twodigit positive integer is 4. If the tens digit and units digit of the number are switched, the new number is 45 less than the original number. What is the sum of the original and the new number? 
Math
In a three digit number, the digit is twice the units digit and the hundreds digit four times the unit digit .also,the sum of its digits is14 .find the number 
aps rk puram .math
Q=if a three 3 digit units digit tense digit hundreds digit are in the ratio 1:2:3.if the difference of original number and the number obtained by reversing the digit is 594.find the no. 
Mathematics PLEASE HELPPPPPPPPPP!!!!!
In a twodigit number the tens’ digit is 3 more than the units’ digit. The number itself is 17 times the units’ digit. Find the number.