![World of Engineering on Twitter: "Mathematical puzzle. Find the missing number. https://t.co/I1joxZXMFH" / Twitter World of Engineering on Twitter: "Mathematical puzzle. Find the missing number. https://t.co/I1joxZXMFH" / Twitter](https://pbs.twimg.com/media/FSc47JrVUAAZfB7.jpg:large)
World of Engineering on Twitter: "Mathematical puzzle. Find the missing number. https://t.co/I1joxZXMFH" / Twitter
![World of Engineering on Twitter: "Mathematical puzzle. Find the area of the square. https://t.co/kWsni95ARo" / Twitter World of Engineering on Twitter: "Mathematical puzzle. Find the area of the square. https://t.co/kWsni95ARo" / Twitter](https://pbs.twimg.com/media/FXMocfcUEAE8uQR.jpg)
World of Engineering on Twitter: "Mathematical puzzle. Find the area of the square. https://t.co/kWsni95ARo" / Twitter
World of Engineering - We have to get the same answer here guys ☝🏻 #worldofengineering #puzzle #teaser #quiz #math | Facebook
![World of Engineering on Twitter: "Mathematical puzzle. Find the missing number. https://t.co/ftECMouU3g" / Twitter World of Engineering on Twitter: "Mathematical puzzle. Find the missing number. https://t.co/ftECMouU3g" / Twitter](https://pbs.twimg.com/media/FNTOnARUcAIKa49.jpg:large)
World of Engineering on Twitter: "Mathematical puzzle. Find the missing number. https://t.co/ftECMouU3g" / Twitter
![World of Engineering on Twitter: "Mathematical puzzle. Find the missing number. https://t.co/I1joxZXMFH" / Twitter World of Engineering on Twitter: "Mathematical puzzle. Find the missing number. https://t.co/I1joxZXMFH" / Twitter](https://pbs.twimg.com/media/FSc7sJjXIAE1gK8.jpg)