What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

How many Watermelons are there in the below picture?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

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.)

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?