Hard Aptitude Number

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?




Similar Riddles

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Easy Gallon Riddle

Asked by Neha on 21 May 2021


A very interesting trivia question for all.

Why do men's shirts have their buttons on the right side and women's have buttons on the left-hand side?

Asked by Neha on 04 Nov 2023

What does below Rebus mean ?

esgg sgeg gegs gsge

Asked by Neha on 10 May 2021


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 ?

Asked by Neha on 21 Feb 2021

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Asked by Neha on 05 Feb 2023

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

Asked by Neha on 23 Jun 2025


'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

Asked by Neha on 28 Apr 2025

What do the following words have in common?

Assess
Banana
Dresser
Grammar
Potato
Revive
Uneven
Voodoo

Asked by Neha on 09 Dec 2025

Solve the counting riddle by identifying the number of triangles in the given picture.

Count the Triangle Riddle

Asked by Neha on 26 Feb 2026


I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

Asked by Neha on 28 May 2024

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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.