What is so fragile that saying its name breaks it?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

2, 3, 5, 9, 17, _ What is the next number in the sequence?

O_er_t_o_

Complete the missing letters of the given word.

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

What kind of band never plays music?