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+/* ## 💻 Day 3: Exercises
+
+### Exercises: Level 1
+
+1. Declare firstName, lastName, country, city, age, isMarried, year variable and assign value to it and use the typeof operator to check different data types.
+2. Check if type of '10' is equal to 10
+3. Check if parseInt('9.8') is equal to 10
+4. Boolean value is either true or false.
+   1. Write three JavaScript statement which provide truthy value.
+   2. Write three JavaScript statement which provide falsy value.
+
+5. Figure out the result of the following comparison expression first without using console.log(). After you decide the result confirm it using console.log()
+   1. 4 > 3
+   2. 4 >= 3
+   3. 4 < 3
+   4. 4 <= 3
+   5. 4 == 4
+   6. 4 === 4
+   7. 4 != 4
+   8. 4 !== 4
+   9. 4 != '4'
+   10. 4 == '4'
+   11. 4 === '4'
+   12. Find the length of python and jargon and make a falsy comparison statement.
+
+6. Figure out the result of the following expressions first without using console.log(). After you decide the result confirm it by using console.log()
+   1. 4 > 3 && 10 < 12
+   2. 4 > 3 && 10 > 12
+   3. 4 > 3 || 10 < 12
+   4. 4 > 3 || 10 > 12
+   5. !(4 > 3)
+   6. !(4 < 3)
+   7. !(false)
+   8. !(4 > 3 && 10 < 12)
+   9. !(4 > 3 && 10 > 12)
+   10. !(4 === '4')
+   11. There is no 'on' in both dragon and python
+
+7. Use the Date object to do the following activities
+   1. What is the year today?
+   2. What is the month today as a number?
+   3. What is the date today?
+   4. What is the day today as a number?
+   5. What is the hours now?
+   6. What is the minutes now?
+   7. Find out the numbers of seconds elapsed from January 1, 1970 to now.
+
+### Exercises: Level 2
+
+1. Write a script that prompt the user to enter base and height of the triangle and calculate an area of a triangle (area = 0.5 x b x h).
+
+   ```sh
+   Enter base: 20
+   Enter height: 10
+   The area of the triangle is 50
+   ```
+
+1. Write a script that prompt the user to enter side a, side b, and side c of the triangle and and calculate the perimeter of triangle (perimeter = a + b + c)
+
+   ```sh
+   Enter side a: 5
+   Enter side b: 4
+   Enter side c: 3
+   The perimeter of the triangle is 12
+   ```
+
+1. Get length and width using prompt and calculate an area of rectangle (area = length x width and the perimeter of rectangle (perimeter = 2 x (length + width))
+1. Get radius using prompt and calculate the area of a circle (area = pi x r x r) and circumference of a circle(c = 2 x pi x r) where pi = 3.14.
+1. Calculate the slope, x-intercept and y-intercept of y = 2x -2
+1. Slope is (m = y2-y1/x2-x1). Find the slope between point (2, 2) and point(6,10)
+1. Compare the slope of above two questions.
+1. Calculate the value of y (y = x^2 + 6x + 9). Try to use different x values and figure out at what x value y is 0.
+1. Writ a script that prompt a user to enter hours and rate per hour. Calculate pay of the person?
+
+    ```sh
+    Enter hours: 40
+    Enter rate per hour: 28
+    Your weekly earning is 1120
+    ```
+
+1. If the length of your name is greater than 7 say, your name is long else say your name is short.
+1. Compare your first name length and your family name length and you should get this output.
+
+    ```js
+    let firstName = 'Asabeneh'
+    let lastName = 'Yetayeh'
+    ```
+
+    ```sh
+    Your first name, Asabeneh is longer than your family name, Yetayeh
+    ```
+
+1. Declare two variables _myAge_ and _yourAge_ and assign them initial values and myAge and yourAge.
+
+   ```js
+   let myAge = 250
+   let yourAge = 25
+   ```
+
+   ```sh
+   I am 225 years older than you.
+   ```
+
+1. Using prompt get the year the user was born and if the user is 18 or above allow the user to drive if not tell the user to wait a certain amount of years.
+
+    ```sh
+
+    Enter birth year: 1995
+    You are 25. You are old enough to drive
+
+    Enter birth year: 2005
+    You are 15. You will be allowed to drive after 3 years.
+    ```
+
+1. Write a script that prompt the user to enter number of years. Calculate the number of seconds a person can live. Assume some one lives just hundred years
+
+   ```sh
+   Enter number of yours you live: 100
+   You lived 3153600000 seconds.
+   ```
+
+1. Create a human readable time format using the Date time object
+   1. YYYY-MM-DD HH:mm
+   2. DD-MM-YYYY HH:mm
+   3. DD/MM/YYYY HH:mm
+
+### Exercises: Level 3
+
+1. Create a human readable time format using the Date time object. The hour and the minute should be all the time two digits(7 hours should be 07 and 5 minutes should be 05 )
+   1. YYY-MM-DD HH:mm eg. 20120-01-02 07:05
+    */
+
+
+
+   
+
+   
+
+   // 1 
+const firstName = 'Eray'
+const lastName = undefined
+const isMarried = true
+const city = 'Istanbul'
+const age = 20
+
+// 2
+
+/* 4 > 3 true
+4 >= 3 true
+4 < 3 false
+4 <= 3 false
+4 == 4 true 
+4 === 4 true
+4 != 4 false
+4 !== 4 false
+4 != '4' true 
+4 == '4' false
+4 === '4' false
+Find the length of python and jargon and make a falsy comparison statement. 
+ */
+
+/* 
+ 4 > 3 && 10 < 12 true 
+4 > 3 && 10 > 12 false
+4 > 3 || 10 < 12 true
+4 > 3 || 10 > 12 true
+!(4 > 3) false
+!(4 < 3) true
+!(false) true 
+!(4 > 3 && 10 < 12)
+!(4 > 3 && 10 > 12)
+!(4 === '4')
+There is no 'on' in both dragon and python */
+
+
+// 7
+
+//i 
+
+const now = new Date()
+console.log(now.getFullYear())
+)
+
+//ii 
+console.log(now.getMonth() + 1)
+
+//iii 
+
+console.log(now)
+
+
+//iv
+
+console.log(now.getDay())
+
+//v
+
+console.log(now.getHours())
+
+//vi
+
+console.log(now.getMinutes())
+
+//vii
+
+console.log(now.getTime())
+
+
+// Exercise Level 2
+
+const triangleBase = 20
+const triangleHeight = 10
+
+const triangleArea = function(a,b){
+   let area = 0
+   return area = a*b*(0.5)
+}
+
+triangleArea(triangleBase,triangleHeight)
+
+// 
+
+const triPerimeter = function (a,b,c){
+   return a + b + c
+}
+
+triPerimeter(1,2,3)
+
+//
+
+const returner = function(a){
+   let math = Math.sqrt(a)
+   return math
+}
+
+
+//
+
+const circPerim = function(r){
+   let math = (3.14)*2*r
+   return math
+}
+
+//
+
+const myFunct = function(x){
+   let y = (x*x) + (6*x) + 9
+   return y 
+}
+
+// 
+
+
+const calculater = function(x,y){
+   const all = (x * y) 
+   const all2 = (x * y * 4)
+   return all && all2 
+'Weekly salary:  ${all} Monthly salary: ${all2}'
+}
+
+
+// 
+
+const nameMessage = (name) => {
+   let myName = name 
+   if (myName.length > 7) {
+      console.log('your age is long')
+   } else {
+      console.log('Your age is short')
+   }
+}
+
+
+//
+
+const compareNames = (firstName,lastName) => {
+   let ad = firstName
+   let soyad = lastName
+   if (ad.length > soyad.length){
+      console.log('your firstname is longer than your lastname')
+   } else if (ad.length == soyad.length){
+      console.log('your first name and your lastname is equal')
+   } else {
+      console.log('your lastname is longer than your firstname')
+   }
+}
+
+
+// That was hard tho
+
+const compareAges = (x,y) => { 
+   let diff = (x - y) 
+   let txt = `X is ${diff} years older`
+   let txt2= `Y is ${(-1 * diff)} years older`
+   let txt3= `ages are equal`
+   if (diff > 0){
+           return txt
+   } else if (diff == 0){
+            return txt3
+   } else { 
+               return txt2
+   }
+}
+
+
+
+// 
+
+const driveYear = (year) => {
+   const now = new Date()
+   const birth = year
+   const age = (now.getFullYear()) - year
+   if (age >= 18){
+       return `you are allowed`
+   } else { return `you cant drive. you can drive after ${(18 - age)} years.` }
+}
+
+driveYear(2005)
+
+
+// How much second I live
+
+const getMin = (year) => {
+   const now = new Date()
+   const birth = year
+   const age = (now.getFullYear()) - year
+   return (age * (365 * 24 * 60 * 60)) + ((age/4) * (24 * 60 * 60))
+   
+}
+
+
+//
+
+
+   
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