Question

6 7 8 9 10 .....74 find the average number​

Answer 1

Answer:

using ap

6+(n-1)*1=74

6+n-1=74

n+5=74

n=74-5

n=69

S=69/2(2*6+(69-1)*1)

69/2(12+68)

69/2*80

69*40

therefore average number

69*40/69

therefore average number =40

Answer 2

Answer:

6 7 8 9 10 .....74 find the average number.

first you have to find the number of terms

l=last term=74

a=6

d=7-6=1

l=a+(n-1)d

74=6+(n-1)1

n-1=74-6

n=68+1

n=69

average=sum of the numbers/(total numbers)

average=(6+7+8+........+74)/69

average=2760/69

average=40

Step-by-step explanation: