Complete the Sequence

2, 3, 5, 9, 17, _ What is the next number in the sequence?




Similar Logic Riddles

Find the missing number in the sequence below:

Find the missing number

Asked by Neha on 03 Sep 2021


Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

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Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Asked by Neha on 28 Aug 2025


The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

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A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

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I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

I Speak only the Truth

Asked by Neha on 15 May 2023


There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

Asked by Neha on 07 Mar 2023

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Asked by Neha on 25 Sep 2023

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Asked by Neha on 01 Jul 2021


At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

Asked by Neha on 20 Sep 2024

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No Solution

In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki