let a = [4, 8, 17, 23, 45, 60];
let b = ['Paul','Alex','Micah','Emma'];

// console.log(a[0]);
// console.log(a[3]);
// console.log(a)

// a[0] = 9;
// console.log(a);

// object
// console.log(typeof a);

// let c = [4, 'Alex', true];

// console.log(typeof c);

//undefine
// console.log(b[4])

// number of element in array
console.log(a.length); // actual number NOT zero base || computer base

// a[10] = 98 ;
// console.log(a)
// console.log(a.length);

a.push(6);
console.log(a)
console.log(a.length);

a.pop();
a.pop();
a.pop();
console.log(a)
console.log(a.length);