John is the son of Jacob.
So,
Jacob is the_____of John's father?

Replace the question mark in the picture below.

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

what does the below math rebus puzzle mean?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

Prove that twice of ten is the same as twice of eleven.

In the picture given below, can you find out which digit will take place of the question mark?

What is the Surname of Barbie Doll?

Five lovely ladies(Sophia, Isabella, Madison, Emma and Olivia) planned a picnic.

They each buy one thing each for the picnic.

Sophia, Emma and Olivia got a drink : orange-Juice, apple-juice, and mango-juice.
Olivia got the drink with the same letter as the one in her first name.
Emma loves mango-juice.
The other two bring some food : chocolates and pizza.
Also Madison is allergic to cheese.

So which ladies bought what ?