Question

what is the sum of all numbers between 150 and 1000 which are divisible by 23

Answer 1

Answer:

69000

Step-by-step explanation:

Answer 2

Answer:

21,275

Step-by-step explanation:

The numbers which are divisible by 23 in between 150 and 1000 are= 161,184,207,.......989

Here, a= 161, t= 989, d=23

Arithmetic formula:-

t= t1+(n-1)d

989= 161+(n-1)23

23(n-1)=989-161

23(n-1)=828

n-1= 36

n= 37

sum of all 37number which divisible by 23 is:-

s= n/2(t1+t)

s= 37/2(161+989)

s=37/2(1150)

s= 37(575)

s=21,275