enclose the circle by a triangle.
draw any two perpendicular line from the three points of contact of circle and the sides of a triangle.
the two perpendicular line intersects that is the center of circle
Sam and Mala have a conversation.
? Sam says I am certainly not over 40
? Mala says I am 38 and you are atleast 5 years older than me
? Now Sam says you are atleast 39
All the statements by the two are false. How old are they
A fly is flying between two trains, each travelling towards
each other on the same track at 60 km/h. The fly reaches one
engine, reverses itself immediately, and flies back to the
other engine, repeating the process each time.
The fly is flying at 90 km/h. If the fly flies 180 km before
the trains meet, how far apart were the trains initially?
Assume for a moment that the earth is a perfectly uniform
sphere of radius 6400 km. Suppose a thread equal to the
length of the circumference of the earth was placed along
the equator, and drawn to a tight fit.
Now suppose that the length of the thread is increased by 12
cm, and that it is pulled away uniformly in all directions.
By how many cm. will the thread be separated from the
When Alexander the Great attacked the forces of Porus, an
Indian soldier was captured by the Greeks. He had displayed
such bravery in battle, however, that the enemy offered to
let him choose how he wanted to be killed. They told
him, "If you tell a lie, you will put to the sword, and if
you tell the truth you will be hanged."
The soldier could make only one statement. He made that
statement and went free. What did he say?
A number. if it is divided by 2 reminder 1,
if it is divided by 3 reminder 1,
if it is divided by 4 reminder 1,
if it is divided by 5 reminder 1,
if it is divided by 6 reminder 1,
if it is divided by 7 reminder 1,
if it is divided by 8 reminder 1,
if it is divided by 9 reminder 1,
if it is divided by 10 reminder 1,
and if it is divided by 11 reminder 0.
its greater then 100. which is that number.
this puzzle has been appeared in one of written
test(aptitude for 20 marks).