Replace the question mark with the correct number in below Picture:

What is next number in the pattern below:

131 517 192 123 ?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Using Only Five 5's and any mathematical operator make sum as 37

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?