Find the sum of the first 15 mulitples of 8
Answers (2)
Student Expert
5th Mar, 2019
Hello Paramjit
Answer is 960
As it is a arithmetic progression.( Ap series).
Formula for the sum of all terms is
Sum= (n/2) * ( 2*a + (n-1)* d)
Where n= number of terms
a = first term of series
d = difference between any two consecutive terms.
Answer is 960
As it is a arithmetic progression.( Ap series).
Formula for the sum of all terms is
Sum= (n/2) * ( 2*a + (n-1)* d)
Where n= number of terms
a = first term of series
d = difference between any two consecutive terms.
Comments (0)
3rd Mar, 2019
Hi paramjit , its problem of arithmetic progression. So use the formula mentioned below
n/2(2a+(n-1)d)
Thanks.
Comments (0)
