Class 3 olympiad maths

There are 55 students in class 3 of a reputed school. Their class teacher bought _____ number of chocolate, so that she can distribute 2 chocolate to each students.

The difference of two numbers is 6 And the Sum is 14. What are the two numbers?

Indra introduces Praveen as the son of the only brother of his father's wife. How is Praveen related to Indra?

In this number series, What will come after 78?

Find the missing number to complete this equation.
? + 122 + 78 + 35 = 269

If water Teacher is Doctor, Doctor is Barber, Barber is Carpenter, Then who cuts our hair?

Raja puts 60 plates in the 1st Shelf, 70 plates in the 2nd shelf and 80 plates in the 3rd shelf. If this pattern continues, Then how many plates will he put in the 5th shelf?

There are 35 students in class 2 of a reputed school. Teacher bought 105 sweets and distributed equally among all students. How many sweets each students got?

Book : Paper :: Pen : ?

If a tank can hold 120 ltr of oil and it is 1/2 filled. Then how much  more oil needs to be poured to fill the tank?