The equation will be corrected by converting which two symbols?
19 + 63 ÷  7 – 8 × 12= 79

Some equations are solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.
5 × 4 × 3 = 70,
6 × 5 × 4 = 140
7 × 6 × 5 = ?

Find the odd word from the following:

Find the odd word from the following:

 A boy walked 3 km. in the south, then he turned to the west and walked 5 km, then he turned to the North and walked 6 km. Then he turned to the East and walked 5 km. In which direction the boy walking when he finished the journey? 

Find the odd word from the following:

A boy walked 3 km. in the south, then he turned to the west and walked 5 km, then he turned to the North and walked 6 km. Then he turned to the East and walked 5 km. How far is the boy from the starting place? 

Rahul’s age is three times the age of Sumit. If Rahul is 15 years old presently, determine the age (in years) of Sumit after 12 years.