Find the next number 9, 16, 21, 24, ?

Viru Sihag   12 years AGO

first of all find the common difference of these given numbers. And that common diff are 7,5,3. This is the AP of common diff -2 so the next common diff is 1 so the value is 25.

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Balakumaran N.A   12 years AGO

Differences of sequences decreasing by 7,5,3,1...
9+7 = 16;
16+5= 21;
21+3= 24;
24+1= 25;

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Jeevan   12 years AGO

9, 16, 21, 24, ?
Diff in numbers is 7,5,3,1

9+7=16
16+5=21
21+3=24
24+1=25 .... option 1

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sumanth jayam   12 years AGO

Diff between first and second is 7
Diff between second and third is 5
Diff between third and fourth is 3
and in the same way
Diff between fourth and fifth should be 1
So 9,16,21,24,25 is the right answer

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Dr. Divya   12 years AGO

Keeping the difference in numbers in decreasing order of odd numbers as 7,5,3,1

24+1=25

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Datla Kanthi   12 years AGO

Differences of numbers are in AP 7,5,3,... diff -2
son next number is 24+1 = 25

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Shiv Kumar   12 years AGO

difference between the numbers is 7,5,3,1....

So Next number will be 25

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saurabh middha   12 years AGO

16=9+7;
21=16+5;
24=21+3;
so next number 25=24+1;

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Gunaseelan   12 years AGO

9+7=16
16+5=21
21+3=24
24+1=25

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Mullaji Zubair Dawood   12 years AGO

the Difference is reducing as 7,5,3 &Then considering Common difference as 2,next difference Is 1,therefore 25 so ans.1

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Komal Jain   12 years AGO

The difference in numbers is 7 (16 -9) , 5 (21 -16), 3 (24 -21) . this way next difference will be 1 .
So, 24 + 1 = 25 is the answer

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sai naresh   12 years AGO

9+7=16
16+5=21
21+3=24
24+1=25

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sridhar reddy   12 years AGO

9
9+7=16
16+5=21
21+3=24
24+1=25

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bharatkavali   12 years AGO

has the difference between the numbers decreases in the order of 7,5,3 so the difference between the numbers must be 1 so, the answer ids 25

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B.Senthil Kumar   12 years AGO

16-9=7, 21-16=5, 24-21=3, x-24=1
so x=25

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anil kumar reddy   12 years AGO

odd numbers decreasing series difference between 9 and 16 is 7 next is 5 and so on

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Balakrishnan M   12 years AGO

9, 16, 21, 24, ?
difference betweenthe sequence is -2.
(i.e)7,5,3,1.

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raja   12 years AGO

=> 9, 16, 21, 24, ...
=> 16-9=7 ,21-16=5 , 24-21=3 , 25-24=1
=> Sequence will Be : 7 , 5 , 3 , 1,....
=> Sequence Will Be : 1 , 3 , 5 , 7.....
=> 9 , 16 , 21 , 24 , 25
=> Ans : 25 ( Option : 1 )

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sugumar   12 years AGO

9,16,21,24 so the difference is 7,5,3,1 this numbers are add to the next number24+1=25

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Vignesh   12 years AGO

In the series, every term increased by consecutive prime number in reverse order from 7.

Therefore,

9 +7 = 16
16 +5 = 21
21 +3 = 24

24 +2 = 26

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J.P.Raja Suresh   12 years AGO

=> 9, 16, 21, 24, ...
=> 16-9=7 ,21-16=5 , 24-21=3 , 25-24=1
=> Sequence will Be : 7 , 5 , 3 , 1,....
=> Sequence Will Be Reversing : 1 , 3 , 5 , 7.....
=> 9 , 16 , 21 , 24 , 25
=> Ans : 25 ( Option : 1 )

Like? Yes (2) | No (1)  

J.P.Anitha   12 years AGO

=> 9, 16, 21, 24, ...
=> 16-9=7 ,21-16=5 , 24-21=3 , 25-24=1
=> Sequence will Be : 7 , 5 , 3 , 1,....
=> Sequence Will Be : 1 , 3 , 5 , 7.....
=> 9 , 16 , 21 , 24 , 25
=> Ans : 25 ( Option : 1 )

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Mohammed Farook.S   12 years AGO

16-9=7;
21-16=5;
24-21=3;
so the above series is odd number
25-24=1;
so the ans is option 1)25

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vignesh kumar   12 years AGO

9+7=16,16+5=21,21+3=24,24+1=25 so the number is 25

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vignesh waran A   12 years AGO

Ans: 25

becoz., 9,16,21,24.25 their differences with neighbours are 7, 5, 3, 1 respectively

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Parikshit   12 years AGO

9 + 7 = 16
16 + 5 = 21
21 + 3 = 24
24 + 1 = 25

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parul mishra   12 years AGO

The following series in increasing with the interval of 7,5,3,1.
so the next term will be 25
option(1)

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sudarshan sahu   12 years AGO

add by odd number 7,5,3,1

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Harmandeep Kaur   12 years AGO

b'coz 16-9=7
21-16=5
24-21=3
25-24=1
so there is a odd integer difference b/w numbers so
answer is 1.

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Pratik Goyal   12 years AGO

the difference between first two numbers is of 7
and between the next two no. is 5
and the next two no is 3
then the difference between next two no. is 1
then final no. would be 25

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pathan   12 years AGO

The series is: +7, +5, +3, +1 ....

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vineet shirdhonkar   12 years AGO

difference b/w 9 and 16 is 7
difference b/w 16 and 21 is 5
difference b/w 21 and 24 is 3
difference b/w 24 and 25 is 1
since in each step diffecnce is decersed by 2 hence 25 is correct answer

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NOBLE RAJKUMAR   12 years AGO

its ODD number series
9+7=16,
16+5=21,
21+3=24,
24+1=25...

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Rajeev Kumar   12 years AGO

16-9=7
21-16=5
24-21=3
25-24=1
All are odd numbers with diff of two

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mayank garg   12 years AGO

there is a decrement of 2 as for eg. in 9 we add 7 that gives 16 then we add with a decrement of 2 that is we add 5 now so it will become 21 and so on....

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sajal jain   12 years AGO

9, 16, 21, 24, --

9*1, 8*2, 7*3, 6*4, --

we can make two series
one is = 9*1, 7*3, --
second is = 8*2, 6*4, --

in both series one digit is decreasing by 2 and another in increasing as 9 to 7 / 1 to 3

so another number will be 5 to 5, it means 5*5 =25

so series is 9, 16, 21, 24, 25

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Sonesh Goindani   12 years AGO

diference between the two nos is decreasing by 2 every time
9,16 - 7
16,21 - 5
21,24 - 3......next shud be 1 so add 1 to 24..=25

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M.Sakthivel   12 years AGO

the number order ll be increase by.. 7,5,3,1 so 24+1=25

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edwin jebakumar   12 years AGO

9,16,21,24,?
16-9=7
21-16=5
24-21=3
all these are odd numbers starting in reverse from 7. therefore the next difference must be 1

24+1=25

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arunraj   12 years AGO

Different b/w two no are prime no in decreasing way from 7

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anand gautam   12 years AGO

9 to 16 decrease 7 ,16to 21 dec 5 and 21to 24 dec 3 so dec by 7,5,3,and 1 so ans is 25

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mridula nahata   12 years AGO

ans : 25
9 16 21 24 25
diff= 7 5 3 1

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akhileshwar reddy g   12 years AGO

9+7=16
16+5=21
21+3=24

7-5=5-3=2 so difference will be 2
then next number will be 24+(3-2)=25

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Avinder Singh   12 years AGO

difference between two consecutive number is decreasing by 2 every time.
let see 16-9=7
21-16=5
24-21=3
so
25-24=1

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suryambika   12 years AGO

as 16-6=7, 21-16=5, 24-21=3
so x-24=1
solving this x=25

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Ayyappan   12 years AGO

Decremental of 2..
+7,+5,+3,+1

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Shubham   12 years AGO

differe between follow a series of odd number

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Bharat Kul Ratan   12 years AGO

Successive difference between numbers is 7, 5, 3, hence next term should be 1 which will lead to number 25

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Nidhi Srivastava   12 years AGO

9+7=16
16+5=21
21+3=24
24+1=25

Like? Yes (1) | No