"143"
Represents the number of letters in each word of the phrase.

A Library

The echo

11

You're looking sharp.

2. Count the number of circles present in each of the numbers.

6,561
There are two sequences arranged alternately. In each sequence the number is the square of the previous number in that sequence. 6,561 is the square of 81.

He saw the salad dressing.

All, the mountains do not fly.

Keep the first bulb switched on for a few minutes. It gets warm, right? So all you have to do then is... switch it off, switch another one on, walk into the room with bulbs, touch them and tell which one was switched on as the first one (the warm one) and the others can be easily identified...

Tomorrow.

Broommates!