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Difficulty Level – Difficult

Riddle – 6 and 7 are really technical terms

January 24, 2018 by John rohaan 1 Comment

I am a 7 letter word
first 3 lets you see the world
2,3,4 is a word of ans
6 and 7 are really technical terms
1 and 7 are the same…….
who am i

[Read more…]

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1 , 17 , 98 , 354 , ?

January 22, 2018 by karthi jayapal 1 Comment

Number Puzzle #180

What will be the next number in this series?

1 , 17 , 98 , 354 , ?

Check your answer:-

Tried enough already?
Click here to See SolutionHide

If you see the difference between the numbers
16, 91, 256
2^4, 3^4, 4^4

next difference should be 5^4 i.s. 625, thus the next number should be 354+625 => 979

Checkout more Number Puzzles Tags: Difficult, Solved Puzzles

complete the series 11,15,19,18,26,21,32, 24,37,__ __

December 19, 2017 by Vaishnavi Bansod Leave a Comment

Number Puzzle #179

 

What will be the next number in this series?

11,15,19,18,26,21,32, 24,37,____

Check your answer:-

Next number

Tried enough already?
Next to next number
Tried enough already?
Answer With ExplanationHide
there are two series in this puzzle,
First is 11,19,26,32,37 & second is 15,18,21,24

first series is AP with a decreasing difference
11 -> 19 => 8
19 -> 26 => 7
26 -> 32 => 6
32 -> 37 => 5
thus next number should be 37 + 4 => 41

second series is AP with a difference of 3
15, 18, 21, 24 => next number should be 27

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Rearrange letters into a proper word

October 14, 2017 by Tawhidur Rahman Bhuiyan Leave a Comment

1. rrreauli
2. lleeratv
3. nrnaoup

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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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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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Rearrange letters – E P C X H B M C R F A O

August 31, 2017 by Arnab Saha Leave a Comment

Guess the correct word from these jumbled letters

E P C X H B M C R F A O

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D 🚗 @ 🍵 👪 sequence – hollywood movie name

August 3, 2017 by kawaljeet singh Leave a Comment

Relate the pictures (whatsapp emoticons) below:

D 🚗 @ 🍵 👪 sequence is the famous hollywood movie name

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Logical Puzzle – At what time train leaves?

June 26, 2017 by puzzler Leave a Comment

Lonnie is taking the train to the Library. He tells Rosti the hour of his train’s departure and he tells Ann at which minute it leaves. He also tells them both that the train leaves between 0600 and 1000.

They consult the timetable and find the following services between those two time: 0632 0643 0650 0717 0746 0819 0832 0917 0919 0950

Rosti then says “I don’t know when Lonnie’s train leaves but i am sure that neither does Ann”

Ann Replies “I didn’t know his train, but now i do”

Rosti responds “Now I do as well!”

When is Lonnie’s train and how do you know?
[Read more…]

Checkout more Logical Puzzles Tags: Difficult, Solved Puzzles

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