#141 - Hard Number Sequence Riddle
Find the next number in the sequence
5 12 24 36 ?
50
sum of consectuve prime numbers
(2+3 , 5+7 , 11+13 , 17+19 , 23+27)
#142 - English Sentence Riddle
By using 'because'continuously three times, can you make a English statement ?
I a dictionary where 'acid' comes before 'because', because 'because' begins with 'B'.
#143 - One Word Riddle
There are five vowels (a, e, i, o, u) in English language.
Can you tell us a word contains of all these vowels ?
Unquestionably
#144 - Hard Number Series Aptitude Riddle
What is the next number in the series.
15 29 56 108 208 ?
400
Explanation:
15
2*15-1 => 29
2*29-2 => 56
2*56-4 => 108
2*108-8 => 208
2*208-16 => 400
#145 - Interesting Maths Puzzle
A women walks into a bank to cash out her check.
By mistake the bank teller gives her rupee amount in change, and her paise amount in rupees.
On the way home she spends 5 paise, and then suddenly she notices that she has twice the amount of her check.
How much was her check amount ?
The check was for Rupees 31.63.
The bank teller gave her Rupees 63.31
She spent .05, and then she had Rupees 63.26, which is twice the check.
Let x be the rupees of the check, and y be the paise.
The check was for 100x + y paise
He was given 100y + x paise
Also
100y + x - 5 = 2(100x + y)
Expanding this out and rearranging, we find:
98y = 199x + 5
or 199x ≡ -5 (mod 98)
or 98*2*x + 3x ≡ -5 (mod 98)
3x ≡ -5 ≡ 93 (mod 98)
this quickly leads to x = 31
#146 - Hard Logic Probabilty Puzzle
Bruna was first to arrive at a 100 seat theater.
She forgot her seat number and picks a random seat for herself.
After this, every single person who get to the theater sits on his seat if its available else chooses any available seat at random.
Neymar is last to enter the theater and 99 seats were occupied.
Whats the probability what Neymar gets to sit in his own seat ?
1/2
one of two is the possibility
1. If any of the first 99 people sit in neymar seat, neymar will not get to sit in his own seat.
2. If any of the first 99 people sit in Bruna's seat, neymar will get to sit in his seat.
#147 - 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
#148 - Hard Thinking Riddle
Which is the smallest number that you can write using all the vowels exactly once.?
sIx thOUsAnd twEnty (6020)
#149 - Riddle for Mathematician
How can you write nineteen in a manner that if we take out one, it becomes twenty?
XIX. On taking one i.e. I, we get XX i.e. 20
#150 - Indiana Jones Treasure Logic Puzzle
Indiana Jones has found two gold bars in a treasure he just excavated from the ground. But the jungle people won’t let him take away their treasure. He runs and come across the only rope bridge that connects the other side of the river to the jungle. He is aware of the fact that the rope can accommodate the weight of only 160 lbs. He weighs 140 lbs and the gold bars are each 12 lbs. Still he manages to cross the rope bridge without shredding any cloth off his body.
How?
Indiana Jones keeps juggling the gold bars in his hand while crossing the bridge.