Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

Today is a very icy and cold morning in Newcastle. Mr Shearer, an office bus driver arrived to pick up the employees from the last stop. Shearer suddenly remembers that he needs to pick a newly joined 4miles to the north. Mr Shearer lost his direction compass, a few minutes later Shearer is able to figure that he is moving in the correct direction i.e. north. How did Shearer know that he is moving in the correct direction?

Can you start the fire using two pieces of wood?

Out of the nine cats that you can see in the picture, there are only two that are completely identical. Can you find them out?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?