Number Series Puzzles or Questions are used all around us whenever we talk about evaluating the IQ. Almost all entrance tests comprises of them. Number Series Questions are asked in the interview too. Also most of the people who love to solve mathematics puzzle will agree that Number Series are the most enjoyable puzzles. The following section is devoted to all such enthusiast brain buddies.
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Latest Number Series #11 - Numbers Relationship Sequence Puzzle

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Can you replace the question mark with the number to complete the series, provided the pair of numbers exhibits a similar relationship?

? : 4623 :: 9 : 647

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Latest Number Series #12 - Which number replaces the question mark puzzle

Difficulty Popularity

Which number replaces the question mark in the picture below ?

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Latest Number Series #13 - Interesting Missing Number Sequence

Difficulty Popularity

Can you find the missing number in the sequence given below?
11 15 19 12 16 ? 13 17 21 14 18 22

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Latest Number Series #14 - The Hundred Number Puzzle

Difficulty Popularity

We can create number 100 by using all numbers, i.e.0123456789 and mathematical operators (+/-) in many ways.
Example
98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition that the use of the number 21 is the must. Then there are only a few solutions.

One of such solution is:
98 - 7 - 6 - 5 - 4 + 3 + 21 = 100

Can you tell any other solution?

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Latest Number Series #15 - Last Number In Tough Sequence Problem

Difficulty Popularity

Can you find the last number in the number sequence given below?

10 : 10 : 20 : 45 : 110 : 300 : ?

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Latest Number Series #16 - Complete the numerical series

Difficulty Popularity

Complete the numerical series by replacing the question mark with the correct numbers.

5+3+2 = 151022
9+2+4 = 183652
8+6+3 = 482466
5+4+5 = 202541
9+5+5 = ??????

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Latest Number Series #17 - Most Popular Number Series IAS Problem

Difficulty Popularity

Can you solve the number series problem by replacing boxes with number 1, 3 , 5 , 7 ,9 , 11 , 13 , 15?

Note: You can also repeat the number.

This interesting problem was asked in India's one of toughest competitive exam UPSC(IAS/IPS).

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Latest Number Series #18 - Number Pyramid Puzzle

Difficulty Popularity

Can you solve below number pyramid puzzle by replacing question mark with the correct number.

168
12 14
? 2 ?
? 2 1 ?

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Latest Number Series #19 - find the missing number of the following series

Difficulty Popularity

Find the missing number of the following series?
16 8 24 12 36 18 54 ? 81

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Latest Number Series #20 - Missing Number In Sequence Riddle

Difficulty Popularity

Can you find the missing number in the sequence?

7 12 37 ? 9142

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