Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

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

How can this be possible?

Which Number is the odd one out?

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

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

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?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

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?