Tawhidur Rahman Dear

Often we receive disturbing calls or sometime we do not like to get call from unknown caller. Some telecom corporations and specially some Chinese mobile set manufacturer provide the option of 'call block service', which blocks incoming calls from some specific numbers. Users need to list the numbers in blacklist. But how many numbers we can list there? It does not fulfill our demand. Only if they provide 'Call Filter' service, then it will be a more effective solution. 

Who has started the option of Google’s 2-step verification & Facebook’s Login Approval knows that the sms containing verification code of Google delivers instantly but Facebook’s Security code delivers too late (for max 12 hours) at least for 5 to 6 days in a month. If you contact with Telecom company, they will say “Facebook did not pass that to our server” AND if you contact with Facebook, they will say “We have already sent the code to Telecom’s server”. Google has two alternative methods: If sms delivery fails, anyone can collect code by receiving phone call. Beside that they provide Ten “One Time Use – Backup Code”. If Facebook starts these two alternatives like Google then we can log in to Facebook easily.

The Great Pyramid of Giza (also known as the Pyramid of Khufu) is the oldest and largest of the three pyramids in the Giza Necropolis bordering what is now El Giza, Egypt. It is the oldest of the Seven Wonders of the Ancient World, and the only one to remain largely intact. The Great Pyramid was built over a 10 to 20-year period concluding around 2560 BCE. Initially at 146.5 meters (481 feet), the Great Pyramid was the tallest man-made structure in the world for over 3,800 years. Initially at 146.5 meters (481 feet), the Great Pyramid was the tallest man-made structure in the world for over 3,800 years. There have been varying scientific and alternative theories about the Great Pyramid's construction techniques. The mass of the pyramid is estimated at 5.9 million tonnes. The Great Pyramid  consists of an estimated 2.3 million blocks to have been transported from nearby quarreies carried by boat either up or down the Nile River to the pyramid – believed by most people. The block us