In the image below, can you find the value of an angle(y)

Can you find out the missing number in the grid?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

Find the next number in the series below

21 32 54 87 131 ?

what does the below rebus means?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?