top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Puzzle: 10,20,74,100 what will be the next number

+2 votes
2,639 views

10,20,74,100. What will be the next number in the series?

posted Dec 30, 2013 by anonymous

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button
next  number in the series 200

2 Answers

+1 vote
 
Best answer

The Next number in the series is 202.

Explanation:-
Natural number starts with 1,2,3,4,5,6..........
This is series is derived by adding 2 consecutive odd Natural Numbers and even natural numbers

first 2 odd natural numbers are 1 and 3 = i.e. square of 1 + square of 3 = gives 10 ( first number)
first 2 even natural numbers are 2 and 4 = Square of 2 + square of 4 = gives 20 ( second number)
second 2 odd natural numbers are 5 and 7 = gives 74 (third number)
second 2 even natural numbers are 6 and 8 = gives 100 ( fourth number)
third 2 odd natural numbers are 9 and 11 which gives 202 ( 5 th number)

answer Feb 26, 2014 by anonymous
+1 vote
3^2+1^2=10 
4^2+2^2=20
5^2+7^2=74
6^2+8^2=100

then

7^2+9^2= 130 

But I am not very convinced with this though we can justify with ifs and buts.

answer Jan 6, 2014 by Salil Agrawal
NOT 7^2                                 
THAT IS 11^2
...