How can one talk without saying a single word?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

Count the number of triangles in the picture below:

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

What does this Rebus Picture mean?

One day Jenifer meets the Lion and the Tiger in the Forest of Forgetfulness. She knows that the Lion lies on Mondays, Tuesdays, and Wednesdays, and tells the truth on the other days of the week. The Tiger, on the other hand, lies on Thursdays, Fridays, and Saturdays, but tells the truth on the other days of the week. Now they make the following statements to Jenifer:

Lion: Yesterday was one of my lying days.

Tiger: Yesterday was one of my lying days too.

What day is it?