The weights of 4 boxes are 20, 30, 50 and 70 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?
Neha's is the only girl of her father and her father is the fatherinlaw of Pranav's brother. Pranav is Rajeev's nephew. How is Rajeev related to Neha?