Rahul father wants to deposit some amount of money every year on the day of Rahul birthday. on his 1st birthday Rs.100,On his 2nd birthday Rs.300,On his 3rd birthday Rs. 600,On his 4th birthday Rs. 1000 and so on.what is the amount deposited by his father on Rahul 15th birthday
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a=100
d=100
n=15
Sn=n/2 (2a+(n-1)d)
=(7.5)(200+1400)
=12000
a=100
d=100
n=15
Sn=n/2 (2a+(n-1)d)
=(7.5)(200+1400)
=12000
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