What four weights can be used to balance from 1 to 30 pounds?

Why 1729 is a magic number? Answer Logically.

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

Rose, Lily and Jasmine decided to buy flowers for their moms on Mother's Day. One of them bought lilies, the other roses, and the third one jasmines.
'It's funny!' said the girl with roses, 'we bought roses, jasmines and lilies, but none of us bought the flowers matching her name'.
'You're right!', said Lily.
What kind of flowers did each of the girls buy?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

Replace the question mark with the correct number.

Why did Navjot Singh Sidhu put the new January calendar in the freezer

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?