Which is the smallest number that you can write using all the vowels exactly once?

I cannot talk, but I always reply when spoken to. What am I?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Where do you go to learn how to make ice cream?

I have two sand hourglasses:
1. A 7 minute one and
2. An 11-minute one.

Using just these 2 sand hourglasses, how can I measure time as 15 minutes?

In a certain bank, a man deposits a certain amount. According to the bank policies, the amount will be doubled up in a year but as the service charge, they will also deduct Rs. 65 by the end of every year.

If after the 6th year, the amount becomes 0, what do you think is the original amount he deposited in the bank?

What breaks yet never falls, and what falls yet never breaks?

Find the number of squares in the below picture

Can you solve the below tricky visual equation?

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?