Class 3 olympiad maths

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

What fraction of the given figure is shaded?

I am an Even number. I have 4 in the Tens place. I am lesser than 43. What number am I?

Sham had 14 more marbles than Ajay. Raghu had 10 marbles less than Sham. If Ajay's marbles count is equal to the largest two-digit number, Then how many marbles they all together have?

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.

There are four thermometer showing four different temperature. Find the product of the temperature of P and R.

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

There are _________ Triangles in this picture?

If water Teacher is Doctor, Doctor is Barber, Barber is Carpenter, Then who teaches us?

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?