SUDOKU 1 RIDDLES It is its own square root Whole part of π It looks like the infinite symbol written vertically 1+ Number of sides of a hexagon 3 ∑i i =1 Solve 1156980+y= 1156986 (−1 ) Its square is the double of its double Number of major Olympian gods divided by 4 { 2 x −3 y =1 3 x +4 y =10 x-y=? Number of World Wonders The age I'll be in 12 years time is equal to x multiplied by 3. I'm 15 years old. 2² +√ 36+45 +3 8 x=? The positive sol ution of x ² =49 Estimate in billions of the World population 214 Measure in degrees of an angle in an equilateral triangle divided by 10 A tee-shirt costs £25. You get a 80% discount. How much will you pay ? It means no in Dutch Value of x given that : x/2 = a x² = 10a + x Number of planets in the Solar system How many eyes have you got ? Perimeter of a square of side 0.25 Number of rainbow colours f(x)=x²+2x+2 A tenth of [(10-9+3+6 -8+18) ÷ 2] Magazine Without Borders Greatest integer that is less than : √8²+( 4²−3²) 2 Issue n°2 The number is even and its square root is a whole number. Number of cat's lives Square root of 72 cos(60°) Image of 1 by f given that Number of Earth' natural satellites ? Number of Mars' moons ? 59