Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

What does this simple rebus mean?

Can you spot the hidden girl in the picture below?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

Find the smallest sentence with all the English alphabet.

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?