what's the probability of getting a king or a queen from a pack of 52 cards?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

How many letters are in the alphabet?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?