What is next number in the pattern below:

131 517 192 123 ?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Can you identify the hidden rebus in the image below?

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?

What does below Rebus mean ?

esgg sgeg gegs gsge

what's the probability of getting a king or a queen from a pack of 52 cards?

Buy me, smell me or deliver me, I do not change.

Who am I?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?