What is next number in the pattern below:

131 517 192 123 ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

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?

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?

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?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

The cream is heavier than Milk. True or False?

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

What do you think with the below Picture ?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.