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2 (2 2)) 2=9 How?

October 16, 2017 by puzzler Leave a Comment

Manage the mathematical symbol or brackets to solve this puzzle

2 (2 2)) 2=9

Click here to See SolutionHide
(2+(2/2))^2=9

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Find next number in following sequence

September 23, 2017 by Reza Ghazi Leave a Comment

What will be the next number in below sequence?

0, 1, 5, 19, 65, 211, ?

Check your answer:-

Tried enough already?
Answer With ExplanationHide
Answer: 665
explanation:
it follows this equation 3^n – 2^n where n is integer starting from 0

thus
3^0 – 2^0 = 1 – 1 = 0
3^1 – 2^1 = 3 – 2 = 1
3^2 – 2^2 = 9 – 4 = 5
3^3 – 2^3 = 27 – 8 = 19
3^4 – 2^4 = 65
3^5 – 2^5 = 211
3^6 – 2^6 = 729 – 64 = 665

There is one more way to solve this

3*previous number + 2^(n-1)

0x3+1=1;
1×3+2=5;
5×3+4=19;
19×3+8=65;
65×3+16=211;
211×3+32=665;

wondering how it is possible?

lets solve 3*previous number + 2^(n-1)

=> 3*(3^(n-1) – 2^(n-1)) + 2^(n-1)
=> 3^n – (2+1)*2^(n-1) + 2^(n-1)
=> 3^n – 2^n – 2^(n-1) + 2^(n-1)
=> 3^n – 2^n i.e. our first equation

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How to buy six products from 20rs?

September 18, 2017 by jspkbsp svkv 3 Comments

How to buy six products from 20Rs. without using Paisa & without repeating numbers ?

Click here to See SolutionHide
It’s not possible. The sum of the 6 smallest digits(1,2,3,4,5,6 is 21) is greater then 20

Rs 6 , Rs5 , Rs4, Rs3, Rs 2, and one item should be free Rs0 (free with other 4 items)

0+2+3+4+5+6=20

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Rearrange letters – Chatwwtsir

September 6, 2017 by Juli Sharma 1 Comment

Guess the correct word from the jumbled letters

Chatwwtsir

[Read more…]

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Find out the missing digit – 30 43 51  ?

September 2, 2017 by Avtar Verma 1 Comment

Number Puzzle #175

find out the missing number

2    3    1    2
3    4    4   5
5    6   6    7
30 43 51  ?

Check your answer:-

Tried enough already?
Click here to See SolutionHide
Answer by Paramjeet Dubey

For each column

-2*2+3*3+5*5=30,
-3*3+4*4+6*6=43,
-1*1+4*4+6*6=51,
-2*2+5*5+7*7=70

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IF 5 7 3 20 10 30 then 95 45 ?

August 1, 2017 by Shekhar Shivi 1 Comment

Number Puzzle #174

IF
5 7 3
20 10 30
then
95 45 ?

Check your answer:-

Tried enough already?
Click here to See SolutionHide
it follows this logic => 2*first digit – second digit
2×5-7=3
2×20-30=10
2×95-45=145

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Missing number Puzzle X 21 147

July 28, 2017 by Ashish Deuskar Leave a Comment

Number Puzzle #173

2 6 18
4 20 100
X 21 147

find X

Check your answer:-

Tried enough already?
Answer With ExplanationHide
Answer: X = 3
Solution
in first row next number is a multiplication of 3 and the previous number
second row, next number is a multiplication of 5 and the previous number
in third row 3rd number (147) is a multiplication of 7 and previous number, i.e. 21, thus X*7 = 21 => x = 21/7 = 3

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ptawspha – rearrange the letters

July 10, 2017 by wasi saim 3 Comments

Correct the spelling – rearrange letters to form a meaningful word.

ptawspha

Check your answer:-

Tried enough already?

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WhatsApp Puzzle – Name these 70 countries

July 7, 2017 by nadhu cutie 2 Comments

Guess these 70 country names from whatsapp emoticons

[Read more…]

Checkout more Miscellaneous Tags: Solved Puzzles, Unsolved Puzzles, WhatsApp Emoticons

ALNNLEO – Rearrange the word/s

July 3, 2017 by Kiran Galway 1 Comment

Rearrange the letters to make the correct word/s

ALNNLEO

[Read more…]

Checkout more Alphabetical Puzzles Tags: Easy, Rearrange Letters Puzzle, Solved Puzzles

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