What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

What kind of tree can you carry in your hand?

Can you find the hidden animal in the picture below?

I travel all around the world but always stay in the corner. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?