Can you solve the maths in the below-given picture equation?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

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?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

Count the number of triangles in the below picture?

Can you find the six hidden animals in the picture below?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?