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

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

O_er_t_o_

Complete the missing letters of the given word.

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?

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

Solve the mathematical equation in the picture below.

What is next number in the pattern below:

131 517 192 123 ?

Dwayne Johnson was running away with the loot from a heist in his car along with Vin Diesel. One tire was punctured and he dropped down to replace it. While changing the wheel, he dropped the four nuts that were holding the wheel and they fell into a drain. Vin Diesel gave him an idea using which they were able to drive till the rendezvous point.

What was the idea ?

What is both possible and impossible at the same time?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()