100 Days Later

When 100 is divided by 7, the remainder is 2. That is, $100 \equiv 2 \pmod{7}$ . Hence, 100 days from now is the same as 2 days from now. Two days after Monday is a Wednesday.

The largest multiple of seven smaller than 100 is $7 \times 14 = 98$ . Which means it will also be a Monday 98 days from today. Therefore, with just 2 days left until we reach 100, we know the 100th day would be Wednesday.

100 days divided by 7 days to a week gives you 14.2 weeks

If today is Monday then it is obvious that after xact 7 days again it will be monday it means after 98 days also it is monday because 98 days consist of 17 weeks hence 2 days left that means next day is tuesday and the other day is wednesday

The simplest solution is to search this problem on google and u will get the answer.....

Basically, you have numbers starting from 0.

0-Mon

1-Tue

2-Wed

3-Thur

4-Fri

5-Sat

6-Sun

7-Mon

You can either count up from sevens until you get to the number thats the highest before 100 or you can do 100 divided by seven, with a remainder of 2. The answer is 98. You know that 98 is a Monday because when you count up by sevens, every number that you count on will be a Monday. However, 98 is still not 100. You need to count up one day for every number.

98-Mon

99-Tue

100-Wed

Therefore Wednesday is the answer.

if we divide 100 by 7,the remainder is 2.

so Monday+2 days=wednesday

100 mod 7 equals 2, meaning 2 days past 14 weeks. Wednesday.

If day 1 is Monday every 7th day will also be Monday. So if we can figure out which day will be the last Monday in the hundred we can count of the rest. 7x7=49, which is almost 50. 50x2=100 and 49x2=98 leaving two extra days after the last Monday. Two days after Monday is Wednesday.

100/7=14 and remainder 2, by this 98th day is monday so 100th day is wednesday

100 =2 (mod 7) hence wednesday

98 days later: Monday since 98 is divisible by 7 (98 divided by 7 = 14). 2 more days later: Wednesday (the answer). That's 100 days passed!

10.10=100 Today is Monday and Monday+9days=Wednesday it means that 10days are passed Now 10days.10days=100days and it will be surely Wednesday

Well all you need to do is 100/7, and just find the remainder.

Let's put $\frac{100}{7}\approx14.2857$ which we put 14.2857 minus 14 to get $\approx0.2857$ .We multiply 0.2857 to 2 and we get 2.So,2 more days after Monday is Wednesday

In this case, we use modular addition, as so: If we begin at Monday, and we fast forward 100 days, we must divide the amount of days we are "fast-forwarding" by the total number of days in a week, which is 7. We get a remainder of 2, which is the amount of days we go forward from Monday from. 2 days after Monday is Wednesday .

If a Monday appears 7 days after today, then (100 days)/(7 days/week) = 14.2857 weeks where the decimal 0.2857 represents the extra part of the week. Multplying 0.2857 weeks by 7 days/week gives 2 extra days after Monday, therefore, the day is Wednesday.

After seven days have passed, it will be Monday again. So, we want to divide 100 by 7 and take the remainder.

100 mod 7 = 2

This means that 100 days from Monday is the same as two days from Monday. Therefore it will be Wednesday.

(I think this is the simplest way and least amount of knowledge.) The highest multiple of seven that I know from multiplication facts is 7x12 (84). Keep on counting up 91, 98. You have 2 more days until 100, so then 2 days from Monday is (Tuesday [1], Wednesday [2]). So your answer is Wednesday.

it is easy...

after 98 days it will monday 7x14=98 and hence 100th day will be wednesday

I was taught like this in school: 100 (days) divided by 7 (number of days in a week). This division will result in 14 and the rest is 2. If it was a exact number, with no rest, answer would be monday. If rest was 1, tuesday. Rest was 2, so the answer is wednesday!

7 days in a week therefore 98th day would be MONDAY. Add 2 days to it ie Wednesday.

Divide 100 by 7, then you will have 98. On the 98th day it will be Mon. so two days later it will be Wed.

7x14=98. So, on the 98th day the day will be Monday. 2 days are left which means two days after Monday including Monday. Hence, the correct answer will be Wednesday.

We know if today is monday after a week it will also be monday... so let see how many weeks contain 100 days... 100days=14weeks+2days means in 14weeks it will be monday + 2days so after 100 days it will be wednesday...

https://www.youtube.com/watch?v=-dh7COSiB7g the point is now to solve it but how fast you solve it :D

100 % 7 = 2 (NOTE THAT % MEANS MODULUS, NOT DIVISION). Monday + 2 = Wednesday.

100/7=14.2, that means 14week end Monday and 2days extra. so, that days Wednesday.

98th day will be Monday ( 100/7 balance day is 2 ) so 100th day is Wednesday

Since, in a week we have 7 days so for 98 days it takes 1 weeks, Now remaining two days are 99-tuesday and finally 100th day will be wednesday.