A. 210

B. 220

C. 230

D. 240

find the next number in the above series and justify your answer with a explanation ….

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Ur series is 15,30,60,105,165….

3×5=15

3×10=30

3×20=60

3×35=105

3×55=165

Difference is 10-5=5

20-10=10

35-20=15

55-35=20

So next is 80-55=25

Therefore 3×80=240 is the answer

Yes it’s right…. But I get easy way

15,30 difference 15

30,60 difference 30

60,105 difference 45

105,165 difference 60

This all differences are 15 th table multiples right

After 60 in 15 th table is 75

I,e 165+75=240

Thank youuu

## Hardik

15 ( 15+15*0)

30 ( 15+ 15*1)

60 ( 30 +15*2)

105 (60+15*3)

165(105+15*4)

240( 165+15*5)

So, Our final answer is 240.

15 ( 15+15*0)

30 ( 15+ 15*1)

60 ( 30 +15*2)

105 (60+15*3)

165(105+15*4)

240( 165+15*5)

So, Our final answer is 240.