If A is the mother of B. C is the son A, D is the brother of E, E is the daughter of B. Who is the grandmother other of D?

Some equations are solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
7– 4 – 1 = 714, 9 – 2 – 3 = 932 8– 0–4 = ?  

A man starts walking from a point and walks 12 kms towards north. He turns 90⁰ left walks a distance and stopped. If the distance between initial point and final positions is 13 kms, how much distance he travelled after turning from the North?

Mohan travelled 5 km towards the West. Then he travelled 3 km. after turning to the left, then 9 km. after turning to the right. Then he went 3 km. towards the North. How far is he from the starting point?

If 5 – 5 =24 and 7 – 7 =48 then find the value of 10 – 10 =?

Anand is son of Prema . Rajeev is brother of Prema . Neha is daughter of Rashmi . Neha is sister of Rajeev . How is Anand related to Rashmi ?

Which day of the week was on 8 November 2018?

In a row of students, Mohan is 10th from right. Sohan is 25th from left. When they change their position then Mohan becomes 22 from right. What is the new position of Sohan from left?