Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

When 99 is considered higher than 100?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

Can you solve the equation by finding the value of
A) Horse
B) Cowboy boot
C) Horseshoe

In the Picture?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

Can you Find and name the hidden bird in the picture below ?