What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Move three sticks of the spiral below to form a square.

What is the longest word in the dictionary?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

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?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

A man dies of old age on his 25 birthday. How is this possible?