diff --git a/src/boolean-conditions.js b/src/boolean-conditions.js
index 5b73eb4..86e0255 100644
--- a/src/boolean-conditions.js
+++ b/src/boolean-conditions.js
@@ -1,10 +1,10 @@
 // Initialise the didPass variable with a boolean value
-let didPass
+const didPass = true
 
 // 1. Create a conditional statement that changes the answer variable to the string
 // "Well done, you passed!" if didPass is true, or "Sorry, try again!" if didPass
 // is false
-let answer
+const answer = didPass ? 'Well done, you passed!' : 'Sorry, try again!'
 
 // 2. When you're done and the test passes, changing didPass to the opposite boolean
 // and run the test again to make sure it still passes
diff --git a/src/multiple-conditions.js b/src/multiple-conditions.js
index 46c8e76..4a9945a 100644
--- a/src/multiple-conditions.js
+++ b/src/multiple-conditions.js
@@ -6,7 +6,7 @@ const NUM = 9 // eslint-disable-line no-unused-vars
 // 1. Use conditional statements to set the value of the answerOne variable
 // to be true if the NUM variable is more than or equal to the LOWER variable
 // AND is less than or equal to the UPPER variable
-let answerOne
+const answerOne = NUM >= LOWER && NUM <= UPPER
 
 // Task 2
 const STR = null
@@ -16,7 +16,7 @@ const STR = null
 // Set answerTwo to false if it's neither of those
 // Run the test after setting STR to 'Hello', then 'Goodbye', then any other value you like
 // to verify your code is correct
-let answerTwo
+const answerTwo = STR === 'Hello' || STR === 'Goodbye'
 
 // Task 3
 const AGE = 0
@@ -34,6 +34,17 @@ const AGE = 0
 // 13-19  | Teenager
 // 20+    | Adult
 let answerThree
+if (AGE <= 0) {
+  answerThree = 'Baby'
+} else if (AGE <= 4) {
+  answerThree = 'Toddler'
+} else if (AGE <= 12) {
+  answerThree = 'Child'
+} else if (AGE <= 19) {
+  answerThree = 'Teenager'
+} else {
+  answerThree = 'Adult'
+}
 
 // Run the test after changing the AGE value to verify you've successfully
 // accounted for each age range
diff --git a/src/numeric-conditions.js b/src/numeric-conditions.js
index 030005f..41f5b6b 100644
--- a/src/numeric-conditions.js
+++ b/src/numeric-conditions.js
@@ -8,17 +8,17 @@ const ARRAY_TWO = ['Hello', 'Conditions', NUM_ONE] // eslint-disable-line no-unu
 
 // 1. Use conditional statements to set answerOne to false if ARRAY_ONE is not empty
 // or true if it is empty
-let answerOne
+const answerOne = ARRAY_ONE.length === 0
 
 // 2. Use conditional statements to set answerTwo to false if ARRAY_TWO is not empty
 // or true if it is empty
-let answerTwo
+const answerTwo = ARRAY_TWO.length === 0
 
 // 3. Use conditional statements to set answerThree to true if NUM_ONE is more than NUM_TWO
-let answerThree
+const answerThree = NUM_ONE > NUM_TWO
 
 // 4. Use conditional statements to set answerFour to true if NUM_ONE or NUM_TWO are included in ARRAY_TWO
-let answerFour
+const answerFour = ARRAY_TWO.includes(NUM_ONE) || ARRAY_TWO.includes(NUM_TWO)
 
 // Don't edit the code below this line
 module.exports = {
diff --git a/src/string-conditions.js b/src/string-conditions.js
index 71d3944..de24174 100644
--- a/src/string-conditions.js
+++ b/src/string-conditions.js
@@ -1,45 +1,49 @@
 // 1. Use conditional statements to set answerOne to true if STR_ONE is 'Hello'
 const STR_ONE = 'Hello' // eslint-disable-line no-unused-vars
 
-let answerOne
+const answerOne = STR_ONE === 'Hello'
 
 // 2. Use conditional statements to set answerTwo to true if STR_TWO is not 'Hello'
 const STR_TWO = 'Goodbye' // eslint-disable-line no-unused-vars
 
-let answerTwo
+const answerTwo = STR_TWO !== 'Hello'
 
 // 3. Use conditional statements to set answerThree to true if STR_THREE is
 // longer than STR_FOUR
 const STR_THREE = 'Hello' // eslint-disable-line no-unused-vars
 const STR_FOUR = 'Good' // eslint-disable-line no-unused-vars
 
-let answerThree
+const answerThree = STR_THREE.length > STR_FOUR.length
 
 // 4. Use conditional statements to set answerFour to true
 // if STR_FIVE starts and ends with the same character, regardless of case
 
 const STR_FIVE = 'Alexandra' // eslint-disable-line no-unused-vars
 
-let answerFour
+const answerFour = STR_FIVE.endsWith(STR_FIVE[0].toLocaleLowerCase())
 
 // 5. Use conditional statements to set answerFive to true
 // if STR_SIX starts and ends with the same character, regardless of case
 
 const STR_SIX = 'Joanna' // eslint-disable-line no-unused-vars
 
-let answerFive
+const answerFive = STR_SIX.endsWith(STR_SIX[0].toLocaleLowerCase())
 
 // 6. Use conditional statements to set answerSix to the middle character of STR_SEVEN
 // if STR_SEVEN has an odd number of characters
 const STR_SEVEN = 'Kayla' // eslint-disable-line no-unused-vars
 
-let answerSix
+const answerSix =
+  STR_SEVEN.length % 2 === 1 ? STR_SEVEN[STR_SEVEN.length / 2 - 0.5] : null
 
 // 7. Use conditional statements to set answerSeven to the middle two characters of
 // STR_EIGHT if STR_EIGHT has an even number of characters
 const STR_EIGHT = 'Alex' // eslint-disable-line no-unused-vars
 
-let answerSeven
+const answerSeven =
+  STR_EIGHT.length % 2 === 0
+    ? STR_EIGHT.substring(STR_EIGHT.length / 2 - 1, STR_EIGHT.length / 2 + 1)
+    : null
 
 // 8. Set answerEight to the appropriate season based on what MONTH is set to
 //
@@ -56,6 +60,16 @@ let answerSeven
 const MONTH = 'January'
 
 let answerEight
+if (['March', 'April', 'May'].includes(MONTH)) {
+  answerEight = 'Spring'
+} else if (['June', 'July', 'August'].includes(MONTH)) {
+  answerEight = 'Summer'
+}
+if (['September', 'October', 'November'].includes(MONTH)) {
+  answerEight = 'Autumn'
+} else if (['December', 'January', 'February'].includes(MONTH)) {
+  answerEight = 'Winter'
+}
 
 module.exports = {
   answerOne,