Can you find out the total number of triangles in the given figure?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

Why 1729 is a magic number? Answer Logically.

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.