How many triangles can you find in this given picture?

what does this picture(rebus) riddle means ?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

How many sides does a circle have?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

What does below chemistry rebus means?