Logical Series

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.




Similar Riddles

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

Asked by Neha on 09 May 2025


Who has married many women but was never married?

Asked by Neha on 09 Aug 2025

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

Asked by Neha on 26 Sep 2024


I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Asked by Neha on 14 May 2021

Where do you go to learn how to make ice cream?

Asked by Neha on 07 Aug 2024

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

Chess Board Puzzle

Asked by Neha on 10 Oct 2025


Which is heavier: a ton of bricks or a ton of feathers?

Asked by Neha on 28 Feb 2022

At a bar, three friends, Mr Green, Mr Red and Mr Blue, were having a drink. One man was wearing a red suit; one a green suit; and the other a blue suit. 'Have you noticed,' said the man in the blue suit, 'that although our suits have colours corresponding to our names, not one of us is wearing a suit that matches our own names?' Mr Red looked at the other two and said, 'You're absolutely correct. What colour suit is each man wearing?

Asked by Neha on 03 Dec 2023

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Asked by Neha on 18 May 2024


French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

Asked by Neha on 09 Sep 2021

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