What are the types of the following expressions and what do they evaluate to, and why?

• 17 17, number
• 1 + 2 * 3 + 4 11 , number, arithmatic equation
• 800 / 80 / 8 1.25 number
• 400 > 200 true, boolean, greater than
• 1 !== 1 false, boolean, tests for inequality
• true || false true, logical operator, or runs the left side first, if true all is true
• true && false False, and operator requires all elements to be true, boolean
• 20 % 6 2, arithmatic equation, number
• 'a' + 'b' string, a + b

What will the following return?

• typeof 4 Number
• typeof 'hello' String
• typeof true boolean
• 2 === 1 || 3 === 4 False

Create a truth table for the expression A || B.

For reference, here is a truth table for the expression A && B:

| A | B | A || B | |||________| | true | true | true | | false| true | true | | true | false| true | | false| false| false |

Create a truth table for the expression !A && !B.

For reference, here is a truth table for the expression A && !B:

Create a truth table for the expression !(A || B).

| A | B | A || B | !( A || B) | ||||____| | true | true | true | false | | false| true | true | false | | true | false| true | false | | false| false| false | true |

Write a step-by-step evaluation for the following expression (remember order of operations): 2 + 3 * 2 + 1. For reference, here is a exp of a step-by-step evaluation:

1 + 2 + 3 + 4  
    3 + 3 + 4
        6 + 4
            10

2 + 3 * 2 + 1 2 + 6 + 1 8 + 1 9

Write a step-by-step evaluation for the following expression (remember order of operations): 4 / 2 + 8 / 4.

4 / 2 + 8 / 4 2 + 2 4

Write a step-by-step evaluation for the following expression: 'ca' + 'ter' + 'pi' + 'llar'.

'ca' + 'ter' + 'pi' + 'llar' 'cater' + 'pillar' 'caterpillar'

Write a step-by-step evaluation for the following expression: 2 * 4 === 8 && 'car' + 'pool' === 'carpool'.

2 * 4 === 8 && 'car' + 'pool' === 'carpool' 8 === 8 && 'car' + 'pool' === 'carpool' 8 === 8 && 'carpool' === 'carpool'

Write a step-by-step evaluation for the following expression: '1' + '2' + '3' - '1'.

'1' + '2' + '3' - '1' 12 + 2 14