Can you replace the question mark with the correct number?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

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

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?

What does this rebus photo means?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Can you count the number of triangles in the given figure?