I am an odd number. Take away a letter and I become even. What number am I?

what does the below math rebus puzzle mean?

Find the smallest sentence with all the English alphabet.

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?

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

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

Can you start the fire using two pieces of wood?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Can you count the number of blocks in the picture below?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?