If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Find the next number in the series below

21 32 54 87 131 ?

Decode below rebus
D
N
A
T
S , D

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

Why Wine Glass Stem is so long?