Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Find the next number in the sequence

5 12 24 36 ?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Which Travels Faster? Solve below famous picture riddle:

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Can you find the 09 errors in the picture below?

Can anyone tell me a word in the English dictionary which has a silent 'z'?