I shave every day, but my beard stays the same. What am I?

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

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

Find the next number in the series.
1 10 24 43 67 ?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

Can you count the number of triangles in the given figure?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?