There are 4 athleles Mark, Anna, Herry and Tom join to the high jump. Here are the result after jump:

Arrange 4 athleles Mark, Anna, Herry, Tom, with the farthest first.

If a and b are prime number , a is smaller than 110 and bigger than 99 and b is the greatest 1-digit number, whats is the total ?

Find x to x + 222¹⁰ =222¹⁰⁰ is possible

2¹⁸=131072 (hours)

Francisco get married at:131072+1=131073 hours

131073 :24 = 5461,375 days

The percent of one day is:24:100= 0,24%

Because 0,5 day = 12 hours so 6 hours=0,25 day.

And 0,375-0,25=0,125(day) so 0,125 day=7 hours.

Answer:5461 days 7 hours

The school has 900 students. 25% of them are weak students. How many students are good students?

What is the last 3-digit A value of the board?

Answer:...

We have: A+A+A+A+B=22

So A=4 and B=2.

We have A+B+B+B+C=16

But A=4 and B=2 has required so C=6.

We have B+C+D+A+B=18

But A=4,C=6 and B=2 has required so D=18-A-C-B-B=18-4-6-2-2=4.

We have A+D+C+D+E=19

But A=4,C=6,D=4 so E=19-A-D-C-D=19-4-4-6-4=1

We have:A+B+C+D+E=17

             =4+2+6+4+1=17 (right)

So F=16-A-E-A-B=16-4-1-4-2=5.

\(\Rightarrow\)The row=B+F+B+F+E=2+5+2+5+1=15;The column=C+E+E+F+E=6+1+1+5+1=14 and A=4,B=2,C=6,D=4,E=1.

We have x²=6400.Prove that x it isn't square number.

Which number is missing?

\(9999\Rightarrow8765\Rightarrow...\)

What is area of the square?

The greatest number 3-digit is : ...

Help me in ten minutes!!

Express this fractions to the percent:\(\dfrac{4}{10},\dfrac{23}{100},\dfrac{254}{1000},\dfrac{7890}{10000}.\)

Calculate:

\(\dfrac{6}{3}\times\dfrac{8}{4}=\)     \(\dfrac{108}{12}\times\dfrac{8}{81}=\)

\(\dfrac{3}{8}\times\dfrac{5}{6}=\)     \(123\times\dfrac{133}{688}=\)

The area of the rectangle is ... cm².

There are many people in the party, in the party has 4 tables, each tables have 3 plates, each plates has 9 pancakes. How many people in the party?

This is a calendar or April:

                                              April

April has 30 days.

Look the calendar, answer the question:
-How many days in the Sunday?

-Today is April 29th. Which day is tomorow? Which day is yesterday?

-Sunday week today is 12th. Which day is Sunday week yesterday?

The edge of square is 9cm. Find the area?

The edge of the cube is 2cm. Find the volume?

Find x:

a)x+33=100;   b)88+x=100;

c)22+x=100;   d)x+18=100