You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

You need to arrange three 7 and mathematical symbols to form number 1?

Count the number of triangles in the picture below:

What is the next number in the series?

15 29 56 108 208 ?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

81 x 9 = 801. What must you do to make the this equation true?

Complete the table series riddle by finding the number that can replace "??".

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

Can you tell a 3D object that has just two surfaces?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?