What is the sum of the arithmetic sequence 4, 11, 18 …, if there are 26 terms?
6 years agothe formula for sum of 'n' terms of Arith seq is (n/2)*(2a+(n-1)d) a is the 1st term d is the common difference,here d=7 just put values and calculate
6 years agoI have to do taht 26 times:?
6 years agono!! u just put the value of n as 26,a as 4 and d as 7 and that will give u sum of 26 terms directly...
6 years agoCan you show me
6 years agoyup ... (26/2)*(2*4+25*7) =13*(8+175) can u solve further?
6 years agoNo
6 years ago2,379 ?
6 years ago@hartnn
6 years agoyes :)
6 years ago