Critical Thinking Puzzles

What English word contains all the vowels a-e-i-o-u in alphabetical order ?

Here is a list showing the month and a number for each january = 73 February = 83 March = 51 April = 52 May = 31 June = 42 July = ...

An intelligent trader travels from 1 place to another carrying 3 sacks having 30 coconuts each. No sack can hold more than 30 coconuts...

Julia is as old as John will be when Julia is twice as old as John was when Julia's age was half the sum of their present ages. Joh...

There are 10 barrels of gold coins. In that, some of the barrels contain 1 gram gold coins and some of the barrels contain 2 gram gold coi...

if 5+3=28, 9+1=810, 8+6=214, 5+4=19 then 7+2= ??

You are making an opaque cube (ie you cannot see through its sides). It can be any size that you want it to be. Where do you place the c...