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Number Puzzle #168 – If 1 + 2 = 13 Then

February 6, 2017 by puzzler 7 Comments

Number Puzzle #168

If 1 + 2 = 13

2 + 3 = 61

3 + 4 = 193

Then 4 +5 = ?

Check your answer:-

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Answer With Explanation
Answer: 481
Explanation:

A+B = (A*B + 2)^2 – 3

Answered by: Nelson DSouza in disqus comments.

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Triangle Number Puzzle – Insert the missing number

November 28, 2016 by puzzler Leave a Comment

Number Puzzle #166

Can you find the missing number in the below triangle from the 4 options given in the image ?

number-puzzle-9-17-160-319-475

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Answer With Explanation
Answer: 949

Explanation: Its actually simple logic, generally we think to find out the relation between the opposite sides, but here the relation is in between adjacent numbers, which is very unusual though.

9 * 2 = 18 -1 = 17

160 *2 = 320 -1 = 319

475 * 2 = 950 – 1 = 949

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Find the next term in the sequence

November 22, 2016 by Vishwa $ 5 Comments

Number Puzzle #165

number-puzzle-165-4-72-652

Can you find the next term in this sequence ?

4, 72, 652, ?

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answered by readers in comments

it is 2^2 => 4
3^3 => 27 => reverse 72
4^4 => 256 => reverse 652
thus the next number should be
5^5 => 3125 => reverse 5213

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what next ?

September 22, 2016 by Raghu Subramaniam 6 Comments

Number Puzzle #163

number-puzzle-163

What next

2 , 2.5 , 3.33 , 4.25 , _ , _ ?

Check your answer:-

First Number

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Second Number

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Click here to See SolutionHide
here the series is
2+1/2

3+1/3

4+1/4

thus next numbers should be

5+1/5 and 6+1/6

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If 10x11x12 = 9 Number puzzle

September 20, 2016 by karthi jayapal Leave a Comment

Number Puzzle #162
if-10x11x129
10×11×12=9
11×12×13=9
12×13×14=9
13×14×15=9
14×16×20=?

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Click here to See Solution

To solve this, replace a n digit number by adding all digits, and solve, keep on repeating it until you get single digit.

10×11×12={(1+0)×(1+1)×(1+2)}^2 =6^2=36=3+6=9

11×12×13={(1+1)×(1+2)×(1+3)}^2 =24^2 =(2+4)^2=36=3+6=9

12×13×14={(1+2)×(1+3)×(1+4)}^2 =60^2 =(6+0)^2 =36 =3+6=9

13×14×15={(1+3)×(1+4)×(1+5)}^2 =120^2 =(1+2+0)^2 =9

14×16×20={(1+4)×(1+6)(2+0)}^2 =70^2 =(7+0)^2 =49 =4+9=13=1+3=4

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If 2-1=3 what is 10-10=???

September 14, 2016 by Harvey Lerman 15 Comments

Number Puzzle #161
if-2-1-3
If
2-1=3
4-4=0
8-5=40
10-10=???
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here a-b=axa+(a/2)x(a/2)-axb

2-1=2×2+(2/2)x(2/2)-2×1=3
8-5=8×8+(8/2)x(8/2)-8×5=40
4-4=4×4+(4/2)x(4/2)-4×4=4
thus
10-10=10×10+(10/2)x(10/2)-10×10=25

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3,5,33,?,503,1233

August 18, 2016 by puzzler 2 Comments

Number Puzzle #160
3,5,33,?,503,1233

What should be the missing number in the below sequence ??

3,5,33,?,503,1233

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Difference of the numbers are following a patter

5 -3 => 2 (1*1*1+1)
33 -5 => 28 (3*3*3+1)
next difference should be (5*5*5 +1) => 126, so 33 + 126 => 159
503 -159 => 344 (7*7*7+1)
1233 -503 => 730 (9*9*9+1)

soln by our readers in comments.

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Number in the middle box ?

August 15, 2016 by puzzler 4 Comments

Number Puzzle #159

Solve this 5 boxes puzzle, what will be the value of the middle box in 3rd set ?
5 boxes puzzle

10          3                      4               5                       7              2

‘      29                                    4                                       ?

8            4                      6               1                        3             5

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the logic is
(first digit square + second digit square) – (third digit square + fourth digit square)
(10^2 + 3^2)-(8^2+4^2) = 29
(4^2 +5^2) – (6^2 +1^2) = 4
(7^2 + 2^2) – (3^2 +5^5) =19

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IF 3-2 = 2, 16-10 = 4

August 5, 2016 by puzzler 3 Comments

Number Puzzle #157

1000 - 265 = ?

If 3 – 2 = 2
16 – 10 = 4
117 – 99 = 9
Then 1000 – 265 = ?

This puzzle is courtesy Pranav, shared via Whatsapp

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if you write the numbers in english words and than subtract the total number of alphabets in both the word, you will get the answer

for example
three – two = 2
sixteen – ten = 4
one hundred seventeen – ninety nine = 19 – 10 = 9
so
one thousand – two hundred sixty five = 11 – 19 = -8

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If 1 + 4 = 5, then 8 + 11 = ?

August 3, 2016 by puzzler 5 Comments

Number Puzzle #156
1+4=5 number puzzle #156

If 1 + 4 = 5
2 + 5 = 12
3 + 6 = 21
Then 8 + 11 = ?

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its
(first number * second number) + first number
so
8 + 11 = 8*11 + 8 = 88 + 8 = 96

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