Number Riddles With Answers

#301 - Short Math Riddle

Can you convert number zero(0) into a positive number using just one mathematical operator ?

#302 - Solve Maths Equation Problem

Find the value of a by solving the maths equation in the picture below

#303 - Hard Number Sequence Riddle

Find the next number in the sequence

5 12 24 36 ?

#304 - Tricky Maths Riddle

I know a number which is spelled in an alphabetical order.
Do you ?

#305 - Tricky Logical Riddle

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Anmol' decides to walk through all the flats, he finds all the flats except flat-62.
Anmol later founds that the local of the town have given it another name.

What is the name of the Flat ?

#306 - English Sentence Riddle

By using 'because'continuously three times, can you make a English statement ?

#307 - 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 ?

#308 - Smart Logic Riddle

A sea diver is a real show off.
He showed everyone that he can hold his breath under water for 15 minutes.

I went to the diver and told him that i can be under water for double the time i.e 30 minutes.
He responded that he will give me 1000$, if i would be able to do it.

I won the 1000$.

what did i do ?

#309 - GK FAQ Riddle

Can you name some countries which do not have the alphabet 'A' in it. ?

#310 - Infosys Logic Interview Question

This was asked in an interview of Infosys.

Interviewer has given me 100 marbles(50 white and 50 black) and two empty boxes.
He then told me that he will leave the room and i need to place all the marbles in two boxes.

And When he come back, he will draw a marble from any of the two box and if the marble is black i will be hired.

Also
* No box can be empty.
* All 100 marbles must be placed in one of the two boxes.

So whats should i have done ?