#1 - Number Fact Puzzle
The square of the number 111,111,111 is amazing.Whats that ?
12,345,678,987,654,321 Amazing :-)
#2 - Easy Math Riddle
When asked how old he was, Mayank replied, 'In 2 years I will be twice as old as I was five years ago.' How old is he ?
12 years
#3 - Maths Wimbledon Matches Problem
In 2012 Men's Wimbledon , 80 tennis player from across the world have come to participate.
As we know its a knock-out tournament , each player is eliminated as soon as he looses a match.
The organizer of the tournament decides to count the minimum number of required matches.
Can you help them out ?
Total Number of Matches: 79
Explanation:
40+20+10+5+2+1+1 = 79 (80-1 =79)
#4 - Christmas Beggar Maths Puzzle
On Christmas , A beggar earns 71 rupees in form of 20-paisa and 25-paisa.
He collects total of 324 coins.
Can you tell me how many number of 20-paisa and 25-paisa he got ?
20 paisa coins : 200
25 paisa coins : 124
Explanation:
Say he collect 20-paisa coins be A
Say he collect 25-paisa coins be B
=>number of 25-paisa coins = (324 - A).
Therefore,
0.20 X A + 0.25 (324 - A) = 71
=>20A + 25 (324 - A) = 7100
=>5A = 1000
=>A = 200.
Hence, number of 25-paisa coins = (324 - A) - 124.
#5 - Mismatch Sum Puzzle
A bank customer had £100 in his account. He then made 6 withdrawals, totaling £. He kept a record of these withdrawals, and the balance remaining in the account, as follows:
Withdrawals Balance left
£50 £50
£25 £25
£10 £15
£8 £7
£5 £2
£2 £0
£100 £99
Why are the Totals not exactly right ?
There is no reason whatever why the customer's original deposit of £100 should equal the total of the balances left after each withdrawal.
The total of withdrawals in the left-hand colum may equal £100, but is is purely coincidence that the total of the right-hand column is close to £100.
Let us show another example, but starting with £200 in the bank:
Withdrawals Balance left
£50 £150
£25 £125
£10 £115
£8 £107
£5 £102
£2 £100
£100 £699
Moral of this story? Don't Total Balances.
#6 - Tricky Nine Maths Riddle
A new medical building containing 100 offices had just been completed. Mark was hired to paint the numbers 1 to 100 on the doors. How many times will Mark have to paint the number nine?
The correct answer is twenty (9,19,29,39,49,59,69,79,89,90,91,92,93,94,95,96,97,98,99(2) and so on).
#7 - Faulty Clock Problem
A clock loses 10 minutes each hour.If the clock is set correctly at noon,what time is it when it reads 3 PM ?
3:36 PM.
The clock loses 10 minutes each hour,
so it loses 5 minutes every half-hour,
and it loses 1 minute very 6 minutes.
It is 12:50 PM at 1:00 o'clock.
It is 1:40 PM at 2:00 o'clock.
It is 2:30 PM at 3:00 o'clock.
It is 2:55 PM at 3:30 o'clock.
It is 3:00 PM at 3:36 o'clock.
#8 - FAQ Puzzle
Ankit Garg holidaying abroad fell off a yacht into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the yacht to realize someone was missing. The missing man was rescued two hours later. Why didn't he drown?
He fell into the Dead Sea, which lies between Israel and Jordan. The water is so salty and dense that anyone in it floats very easily.
#9 - Ramanujan Magic Number Riddle
Ramanujan discovered 1729 as a magic number.
Why 1729 is a magic number ?
They can be expressed as the sum of the cubes of two different sets of numbers.
10^3 + 9^3 = 1729
and
12^3 + 1^3 = 1729
#10 - Smart Math Problem
As they say, beggars can't be choosers, in fact begger take what they can get. A begger on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the begger finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?
14
If the begger can make a whole cigarette from 6 butts then he can make 12 cigarettes from the 72 he found. Once he smokes those, he then will have another 12 butts, which gives him enough to make another 2 cigarettes. A total of 14.