What is the next number of the following sequence 521,523,526,5201,5251,.......

rohit kumar   11 years AGO

Reverse all the numbers i.e
125,325,625,1025,1525
Now,
325-125=200
625-325=300
1025-625=400
1525-1025=500
So next one will be

2125-1025=600
Now reverse the term i.e 5212

Like? Yes (20) | No (2)  

Dharmendra Singh   11 years AGO

Ans 2) 5212
Explanation:
Reverse the all digits we got a series as
125, 325, 625, 1025, 1525, .. here difference of next no. is 200, 300, 400, 500, so next will be 600 so 1525+600=2125 now we reverse we get 5212 :)

Like? Yes (4) | No (1)  

Pargat Pal Singh   11 years AGO

521,523,526,5201,5251,.......
writing numbers in reverse order

125,325,625,1025,1525
Diff in numbers is 200,300,400,500
next number will be obtained by adding 600.
so next number in reverse order will be 1525+600=2125...
2125 5212
so required number is 5212.

Like? Yes (3) | No   

Harjit kaur   11 years AGO

Writt d seq by reversing digit of every no as
125,325,625,1025, 1525
nw here diff b/w these no is
200,300,400,500 res.
So d next no diff will be 600
so next term is 1525+600=2125
By reversing it's digit we get the ans 5212

by reversing it's digit we get 5212
That's ans.

Like? Yes (2) | No (1)  

vaibhav rajhns   11 years AGO

take reverse order of digits i.e
521 as 125
523 as 325
526 as 625
5201 as 1025
5251 as 1525
then we require 2125 so answer is 5212

Like? Yes (1) | No   

bothra namita   11 years AGO

sequence is given as first two digits(52) are stationary and other digits are the series with consecutive no is add(1, 3=1+2, 6=3+3, 01=reverse of 10(=5+4)..)
thus next no is 5212(12= reverse of 21(=15+6))

Like? Yes (1) | No   

Ann Mary Jolly   11 years AGO

The digits after 52 is given by Tn=Tn-1+n,in reverse order.
So the digits in T6 after 52is T6=T5+6=15+6=21 in reverse order,so 12
Therefore the next term is 5212.

Like? Yes (3) | No (2)  

Kanika   11 years AGO

521, now take last digit of 521 i.e. 1
1+2=3 so 523
3+3=6 so 526
6+4=10 but written as 01 so 5201
10+5=15 but written as 51 so 5251
15+6=21 but written as 12 so 5212

Like? Yes (1) | No   

Manish Singh   11 years AGO

reverse the digit ,i.e 325-125=200
625-325=300
similarly
1525-1025=500 and the next digit should have a diff of 600 ,so 1525+600=2125 an reverse it we have 5212 i.e option no 2 .

Like? Yes (2) | No (1)  

raja babu   11 years AGO

5 2 1 =
5 2 3 = difrence of unit digit is 2
5 2 6 = difrence of unit digit is 3
5 2 0 1= difrence of unit digit is 4
5 2 5 1=difrence of unit digit is 5
so differen unit digit will be 6 and it is added in unit digit and carry is written before unit digit.
so the next no. will be 5212

Like? Yes (1) | No   

sharmila navaladi   11 years AGO

the unit digit is added by 1.

Like? Yes (1) | No   

Bicky kumar   11 years AGO

i incrases by linearly by 2,3,4,ans so on and after every 10,a new number starting from o is started.
523-521=2,526-523=3we can see that it increasing linearly.now for the next number 526+4=530 but it is 5201.for the next number increses by 5 so 525+5=530but it will be 5212.

Like? Yes (1) | No   

Akash Mehta   11 years AGO

1st number fixed=5
2nd number fixed=2
now the difference of third digit is increasing linearly,i.e,means increasing by 1.
1-3=2
3-6=3
6-10(reverse of 01)=4
10-15(reverse of 51)=5
so, 15-21(reverse of 12)=6
hence 5212 is the rite answer.

Like? Yes (1) | No   

Kanchan Nandwani   11 years AGO

as here all the numbers in series have 52 (frst two digit) and521,523,526,5201,5251......
1,3,6,10(inverting last two digits of 5201),15(inverting last two digits of 5251)
and differnces are in AP next term would 21 ie.
12...5212

Like? Yes (2) | No (1)  

Anantharaman   11 years AGO

Reverse the numbers, we get

125 325 625 1025 1525 2125
200 300 400 500 600

2125 => Reversing the digits, we get

5212 (Option 2)

Like? Yes (2) | No (1)  

Rats   11 years AGO

first two digits in each number same. Now look at the remaining digits..
1,3,6,01,51
reverse the last two numbers
1,3(1+2),6(3+3),10(6+4),15(10+5)
so next number is (15+6)21
now reverse it and join with 52
So we get 5212.....Ans

Like? Yes (2) | No (2)  

Udhaya kumar   11 years AGO

It is the sequence of reverse number of 25*(5+2n)
where n = 0,4,10,18,28,40 respectively.......
so next number is 25*(5+2(40))=25*85=2125;;5212......

Like? Yes (1) | No (1)  

Devendra Marghade   11 years AGO

Following result written with digits reversed
25*5=125 = 521
25*(5+8)=325 =523
25*(13+12)=625 =526
25*(25+16)=1025 =5201
25*(41+20)=1525 =5251
25*(61+24)=2125 =5212

Like? Yes (1) | No (1)  

Md Shahnawaz Shahab   11 years AGO

521
52(1+2)=523,
52(3+3)=526,
52(6+4)=5210=5201,
52(10+5)=5215=5251,
52(15+6)=5221=5212

Like? Yes (1) | No (1)  

surbhi rathaur   11 years AGO

521:1+2=3, so next no. is 523
then 3+3=6, next no. is 526
6+4=10 the last digits are reversed in the next no. i.e.5201
then 10+5=15, digits reversed i.e. 5251
hence next no. will be 15+6=21, digits reversed i.e. 5212

Like? Yes (1) | No (1)  

risha anand   11 years AGO

521=1st 2 digits are 52,last digit is 1
523=1st 2 digits are 52,last digit is 3
526=1st 2 digits are 52,last digit is 6
5201=1st 2 digits are 52,last 2 digit is 10 written as 01
5251=1st 2 digits are 52,last 2 digit is 15 written as 51
so, in our ans also 1st 2 digits will be 52 so lat 2 digits will be 21 written as 12
ANS.5212 i.e option no. 2

Like? Yes (1) | No (1)  

jatin patware   11 years AGO

increment by 1 then 2 3 4 5
so increment is 6
51=15
15+6=21
21=12

Like? Yes (1) | No (1)  

harshit   11 years AGO

soln:
the first two digit 52 remain d same...the third digit increases...1,1+2=3,3+3=6,6+4=10(reversed),10+5=15(reversed),15+6=21(reversed)..so 5212

Like? Yes (1) | No (1)  

manisha mehta   11 years AGO

521(52,1), 523(52,3), 526(52,6), 5201(52,10 and the 10 gets reversed i.e. 52,01), 5251(52,15 and the 15 gets reversed i.e. 52,51) and now, according to the series, (1,3,6,10,15 .. ) the next term comes as 21 and it gets reversed as 12 which gives the next term as 5212

Like? Yes (1) | No (1)  

Amar Deep Singh   11 years AGO

the series follows as 521,523,526,5201,5251,5221 keeping 52 as constant and increasing the next term as follows 520+1=521
521+2=523
523+3=526
526+4=5210 but the summmation part after three terms written in reveresed order as=5201.
5210+5=5215 but written as5251.
5215+6=5221 but written as5212.

Like? Yes (1) | No (1)  

prabhat kumar   11 years AGO

first reverse all the digits. so the series becomes 125,325,625,1025,1525. Now we'll see that each successive terms differ by 200,300,400,500 respectively. So the 6th term would differ by 600. so 6th term = 1525+600 = 2125. Reversing this number we get 5212.

Like? Yes (1) | No (1)  

rakesh   11 years AGO

reverse all the given numbers then,
125,325,526,1025,1525,....(on dividing each number by 25)
25*5=125,25*13=325,25*25=625,25*41=1025,25*61=1525..
now consider diff b/w quotients,there pattern is as follows..
8,12,16,20..(diff getting increased by 4,therefor next one should be 24)
hence 61+24=85,25*85=2125.
now reverse this number we get 5212..
therefore answer is 5212

Like? Yes (1) | No (1)  

manasa epuru   11 years AGO

add +2,+3 and so on.. when it crosses 10 reverse last two digits..

Like? Yes (1) | No (1)  

Bhargav Dekivadiya   11 years AGO

see last digit 1,3,6 and distance is 1+2=3, 3+3=6, 6+4=10(rotate it = 01),10+5=15(rotate it = 51) so 15+6=21(after rotating 12)...so ans is 5212

Like? Yes (1) | No (1)  

ANIL CHOUDHARY   11 years AGO

52 is constant...and unit digit of first no. is..
1.second1+2=3,third 3+3=6,fourth there are write in opposite order 6+4=10,fifth 10+5=15,sixth..15+6=21,,there for next term is...5212

Like? Yes (1) | No (1)  

P.Krishnakanth   11 years AGO

521,523,526,5201,5251

here 52 is common
1 3 6 01 51
1 3 6 10 15
difference 2 3 4 5 6
so 21-15=6 then 12 is the next number
answer 5212

Like? Yes (1) | No (1)  

VAGU RAGHAVA ANJANI DIVYAVANI   11 years AGO

52 is common..
01 must be reversed so 10
51 revers 15
so
difference is 3-1=2
1,3,6,10,15,

Like? Yes (1) | No (1)  

pratik namjoshi   11 years AGO

its just +n and reversing the digits in resulting sum where n is 1,2,3,...

Like? Yes (1) | No (1)  

manisha gajanan gawai   11 years AGO

521 add 2 it become 523
then add 3 into 523 it become 526
then add 4 into 526 it become 5210 interchange last digit now new one is 5201
again add 5 into 5210 it become 5215 interchange last digit now it become 5251 same process ans is 5212

Like? Yes (1) | No (1)  

sivaraman   11 years AGO

521 next number is 523. first two digit are same. so we update last two digit add and make it reverse..
so 5251 add 6 5212

Like? Yes (1) | No (2)