This is what you have to do when you don't have a cell phone with a calculator on it...See the women power Human computer of India. 10 wonder girls answering the tough math question in seconds. These two young brothers, recipients of ...

This is what you have to do when you don't have a cell phone with a calculator on it...This is what you have to do when you don't have a cell phone with a ...

See the women power 'Human computer' of India. 10+ wonder girls answering the tough math question in seconds.

Mog entered the Child Genius competition of his own accord, and now it's his time to step up to the maths challenge. Watch the full episode on All 4: ...

This is what you have to do when you don't have a cell phone with a calculator on it...