Find the next number in the sequence

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

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

What does below chemistry rebus means?

What has 88 keys?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Why do we preferably have round manhole covers and not square ones?

My location can be determined by the below rebus.
So where am i ?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

500 women soldiers are arranged in an array of ten rows and fifty columns in accordance with their respective heights. Now, the tallest woman from each row is asked to move out in the front. From them, the shortest one is labelled as Alpha. They are then asked to resume their original position.

Now, the shortest woman in each column is asked to come out in front. The tallest among them is labelled as Beta.

Can you find out if Alpha will be taller or Beta?