Logical Series

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

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




Similar Riddles

Using eight eights and addition only, can you make 1000?

Asked by Neha on 17 Feb 2024


While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

Asked by Neha on 14 Jan 2021

A pet show was happening in my locality. I went down along with my kids. In that show, I noticed that all except two of the entries were cats. All except two were dogs and all except two were Monkeys.

Can you find out how many of each animals were present in that pet show?

Asked by Neha on 04 Feb 2021


I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Asked by Neha on 08 Jun 2023

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

Magical Wheels

Asked by Neha on 22 Sep 2024

Can you divide the below-given shape into four equal and identical pieces?

Divide in Equal Shape

Asked by Neha on 27 Nov 2023


I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

Asked by Neha on 28 Feb 2021

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

Asked by Neha on 30 Oct 2023

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

Asked by Neha on 05 Jul 2025


Which digit occurred maximum times between the number 1 and 1000?

Asked by Neha on 13 Oct 2025

Hot Articles

Amazing Facts

Out of the Box

The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.