Logical Series

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

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




Similar Riddles

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

Asked by Neha on 25 Dec 2025


On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

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Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

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Clara opened 1 present

Can you find out how many presents were opened by Candy?

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Which wheel of car does not rotate when you turn your car right?

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Count the number of balls in picture below:


Count The Balls

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A word I know has six letters it contains, remove one letter and 12 remain. What is it?

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What always comes into a house through the keyhole?

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If we change the South-East direction into North and North-East into West and all others similarly.
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If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

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Amazing Facts

Word ladder puzzle

The word ladder puzzle was invented by Lewis Carroll, author of Alice’s Adventures in Wonderland.