What does below pictogram mean?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

How can you make number one disappear by adding something to it?

Do you know who was buried in John's tomb?

What question can you never answer yes to?

If an electric train is travelling south, then which way is the smoke going?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

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?

What does a man do only once in his lifetime, but women do once a year after they are 29?