Why is it very easy to weigh a fish?

What does this rebus means ?

PROG WORKRESS

Can you count the number of triangles in the picture below?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Which is the smallest number that you can write using all the vowels exactly once?

What has hands, but can’t clap?

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?