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Product of 5 different temperatures

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Number Puzzle #66
The product of 5 different temperatures is 12. If all of them are integers then find all the temperatures.


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product of 5 different integers is 12.

Lets consider first product of first 3 smallest integers
1*2*3 = 6
Now if we take the next smallest intege i.e. 4 then the product will become 24 thus we need to go back and consider negative numbers

thus (-2)*(-1)*1*2*3 = 12.

How many toffee’s you can get in Rs.15

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Number Puzzle #65
Cost of one toffee is Rs.1 and as a special promotion scheme you get 1 toffee free for three wrappers.
How many toffee’s you can get in Rs.15?


–In Hindi– 1 rs ki ek toffee. 3 wrappers k sath ek aur toffee milti hai.. u’v got Rs.15.. how many total toffee’s u get?

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First of all you get 15 toffee in Rs.15, then you get 15/3 = 5 toffees from 15 wrappers.

Now you have 5 wrappers => 1 toffee + 2 wrappers => 3 wrappers => 1 toffee
Total number of toffees you get => 15 + 5 + 1 + 1 => 22 toffee’s.

Next number in the series 1, 11, 21, 1211

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Number Puzzle #64

What will be the next number in the series?

Next number in series 1, 11, 21, 1211, 111221

Next number in series 1, 11, 21, 1211, 111221


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Hint: If you really need
Next number is : 312211, Now can you guess the next number?
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See Answer with Explanation
Here we need to count the number of individual digits, how many 1’s, how many 2’s etc.
for example
1 => one 1 => 11
11 => two 1 => 21
21 => one 2 one 1 => 1211
Thus to get 5th number in the series
111221 => three 1 two 2 one 1 => 312211
And to get the sixth number in the series
312211 => one 3 one 1 two 2 two 1=> 13112221

If 11 + 11 = 8, 12 + 12 = 12

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Number Puzzle # 63

If 11 + 11 = 8, 12 + 12 = 12, 13 + 13 = 16 14 + 14 = 16 Then 16 + 16 = ?

If
11 + 11 = 8,
12 + 12 = 12,
13 + 13 = 16
14 + 14 = 20
Then
16 + 16 = ?


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See Explanation
Answer is 28
How?
Right side number is equal to the sum of the digits on left side multiplied by 2
for ex.
11 + 11 => (1+1+1+1)*2
Thus
16 + 16 => (1+6+1+6)*2 = 28.

10,20,74,100 what will be the next number

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Number Puzzle #62

10,20,74,100. What will be the next number in the series?

next number 10, 20, 74, 100, ?

next number 10, 20, 74, 100, ?

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The Next number in the series is 202.

Explanation:-
Natural number starts with 1,2,3,4,5,6……….
This series is derived by adding 2 consecutive odd Natural Numbers and even natural numbers

first 2 odd natural numbers are 1 and 3 = i.e. square of 1 + square of 3 = gives 10 ( first number)
first 2 even natural numbers are 2 and 4 = Square of 2 + square of 4 = gives 20 ( second number)
second 2 odd natural numbers are 5 and 7 = gives 74 (third number)
second 2 even natural numbers are 6 and 8 = gives 100 ( fourth number)
third 2 odd natural numbers are 9 and 11 which gives 202 ( 5 th number)

Answered by : Vishal Vinchankar

If 9999=4, 8888=8

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Number Puzzle #61

number puzzle #61

If 9999=4
8888=8
1816=3
1212=0
Then 1919=?


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See Explanation
Answer is 2.
How?
If you observe carefully, right side number is equal to total number of circles in the left side numbers. thus the answer to 1919 should be 2.

Take 1000 and add 40 to it

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Tricky math question!
Note: This must be done in your head only. Do NOT use paper and pencil or a calculator. Try it.

Take 1000 and add 40 to it. Now add another 1000. Now add 30. Add another 1000. Now add 20. Now add another 1000. Now add 10. What is the total?


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Did you get 5000? The correct answer is actually 4100.
Don’t believe it? Check with your calculator!

Number puzzle from month name

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Here is a list showing the month and a number for each

January 73
February 83
March 51
April 52
May 31
June 42
July 41
August 63

Decipher the logic and find the number for September.

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Answer is 93.
How?
If you observe first number is the number of letters and the second number is the number of vowels present in the month spelling. Thus for september it should be 93.

Guess the car number

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There is a 4 digit card number,
4th digit is double of 1st digit,
2nd n 3rd digits are same,
And last digits together are double of first two digits
Can you guess the car number?


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Click here to see Explanation
lets assume first digit is x, then the 4th digit will be 2x.
also assume 2nd and 3rd digits are y.
then from => last two digits are double of first two digits, we can say
y(2x) = 2*(xy)

We can rewrite is as 10y + 2x = 20x + 2 y
8y = 18x
4y = 9x; => y/x = 9/4
as x and y are integers y => 9, x => 4

thus the car number is 4998

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