What is the seventh term of following series: 4, 7, 12, 19, 28,

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20 Aug 2018 Series

What is the seventh term of following series:
4, 7, 12, 19, 28,

OPtion

1) 50
2) 52
3) 30
4) 36
5) 35
6) 40
7) 45
8) 39
9) 34
10) None of these

Solution

nth term = n^2 + 3
n=1, 2, 3, 4, 5, 6, and so on

So 7th term = 7^2 + 3 = 52

Option 2)

Correct Option: 2 Best Solution (12)

Devendra Marghade   5 years AGO

There is a difference of 3, 5, 7, 9, 11, 13, .. in the terms
So the series is 4, 7, 12, 19, 28, 39, 52
Hence seventh term is 52
Option 2)

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Darshit Soni   5 years AGO

By adding odd numbers from 3 you will get this series
i.e. 3,5,7,9,...

e.g. 4+3 =7, 7+5 =12, 12+7=19, ...,39+13= 52

so, the seventh term of this series will be 52.

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ARINJOY GHOSH   5 years AGO

t1=4
t2=4+3=7
t3=7+5=12
t4=12+7=19
t5=19+9=28
t6=28+11=39
t7=39+13=52

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Naveen kumar reddy varampati   5 years AGO

difference is increasing according to odd number series:
4+3=7
7+5=12
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Kariamal   5 years AGO

4+3=7
7+5=12
12+7=19
19+9=28
28+11=39
39+13=52

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ruby   5 years AGO

Given series increasing Like +3,+5,+7,+9,+11,+13
5th term = 28
7th term = 28+11+13 = 52
Hence option 2

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Saran Teja   5 years AGO

difference between every two number is an odd number (3,5,7,9,11,13.....)

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nagasai dasari   5 years AGO

adding of odd numbers

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Prashant mishra   5 years AGO

There is an increase of 3,then 5, then 7 and so on.
at seventh place there will be an increase of 13 which will be added to the previous number,that is,49.
Thus final answer is 52.

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BANOTH CHANDANA   5 years AGO

4+3=7
7+(3+2)=12
12+(3+2+2)=19
19+(3+2+2+2)=28
28+(3+2+2+2+2)=39
39+(3+2+2+2+2+2)=52

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Shafigheh Nikpour   5 years AGO

1)4+3=7
2)7+5=12
.
.
.
7)39+13=52

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vignesh   5 years AGO

the difference between each number increases by 3,5,7,9,11,13..... and so on respectively. according to this the seventh term will be 52

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