diff --git a/1-js/02-first-steps/15-function-basics/1-if-else-required/solution.md b/1-js/02-first-steps/15-function-basics/1-if-else-required/solution.md
@@ -1,3 +1,2 @@
-No difference!
-
-In both cases, `return confirm('Did parents allow you?')` executes exactly when the `if` condition is falsy.
diff --git a/1-js/02-first-steps/15-function-basics/2-rewrite-function-question-or/solution.md b/1-js/02-first-steps/15-function-basics/2-rewrite-function-question-or/solution.md
@@ -1,17 +1,17 @@
-Using a question mark operator `'?'`:

```js
function checkAge(age) {
-  return (age > 18) ? true : confirm('Did parents allow you?');
}
```

-Using OR `||` (the shortest variant):

```js
function checkAge(age) {
-  return (age > 18) || confirm('Did parents allow you?');
}
```

-Note that the parentheses around `age > 18` are not required here. They exist for better readability.
diff --git a/1-js/02-first-steps/15-function-basics/2-rewrite-function-question-or/task.md b/1-js/02-first-steps/15-function-basics/2-rewrite-function-question-or/task.md
@@ -2,25 +2,25 @@ importance: 4

---

-# Rewrite the function using '?' or '||'

-The following function returns `true` if the parameter `age` is greater than `18`.

-Otherwise it asks for a confirmation and returns its result.

```js
function checkAge(age) {
  if (age > 18) {
    return true;
  } else {
-    return confirm('Did parents allow you?');
  }
}
```

-Rewrite it, to perform the same, but without `if`, in a single line.

-Make two variants of `checkAge`:

-1. Using a question mark operator `?`
-2. Using OR `||`
diff --git a/1-js/02-first-steps/15-function-basics/3-min/solution.md b/1-js/02-first-steps/15-function-basics/3-min/solution.md
@@ -1,4 +1,4 @@
-A solution using `if`:

```js
function min(a, b) {
@@ -10,12 +10,12 @@ function min(a, b) {
}
```

-A solution with a question mark operator `'?'`:

```js
function min(a, b) {
  return a < b ? a : b;
}
```

-P.S. In the case of an equality `a == b` it does not matter what to return.
diff --git a/1-js/02-first-steps/15-function-basics/3-min/task.md b/1-js/02-first-steps/15-function-basics/3-min/task.md
@@ -2,11 +2,11 @@ importance: 1

---

-# Function min(a, b)

-Write a function `min(a,b)` which returns the least of two numbers `a` and `b`.

-For instance:

```js
min(2, 5) == 2

diff --git a/1-js/02-first-steps/15-function-basics/4-pow/solution.md b/1-js/02-first-steps/15-function-basics/4-pow/solution.md
@@ -14,7 +14,7 @@ let x = prompt("x?", '');
let n = prompt("n?", '');

if (n < 1) {
-  alert(`Power ${n} is not supported, use a positive integer`);
} else {
  alert( pow(x, n) );
}

diff --git a/1-js/02-first-steps/15-function-basics/4-pow/task.md b/1-js/02-first-steps/15-function-basics/4-pow/task.md
@@ -2,18 +2,18 @@ importance: 4

---

-# Function pow(x,n)

-Write a function `pow(x,n)` that returns `x` in power `n`. Or, in other words, multiplies `x` by itself `n` times and returns the result.

```js
pow(3, 2) = 3 * 3 = 9
pow(3, 3) = 3 * 3 * 3 = 27
pow(1, 100) = 1 * 1 * ...* 1 = 1
```

-Create a web-page that prompts for `x` and `n`, and then shows the result of `pow(x,n)`.

[demo]

-P.S. In this task the function should support only natural values of `n`: integers up from `1`.
Original file line number	Diff line number	Diff line change
		@@ -1,3 +1,2 @@
		No difference!

		In both cases, `return confirm('Did parents allow you?')` executes exactly when the `if` condition is falsy.