What is next number in the pattern below:

131 517 192 123 ?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

How can you take 2 from 5 and leave 4?

Which Burger Is Different in below image?

If eleven plus two equals one, what does nine plus five equal?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?