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

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

What is the next number in this series?

4,12,84,3612....

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

Which is faster, Heat or Cold ? Explain.

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

How many bananas can you eat if your stomach is empty?

In which direction should the missing arrow point?

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?