What has hands, but can’t clap?

You can hear me, but you can't touch or see me.

What am I?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

If you say my name, I will no longer exist. What am I?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

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?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What has 13 hearts but no other organs?

What 5-letter word typed in all capital letters can be read the same upside down?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?