Question

solve all three questions please​

Answer 1

SEE THE ATTACHMENT YOUR ANSWER IS THIS AND I THINK IT IS CORRECT

#TOGETHER WE GO FAR✔✔

Answer 2

Answer:

[ A ]

★ nth term=a+(n-1)d

=>498=3+(n-1)5

=>498=3+5n-5

=>498+2=5n

=>n=500/5=100th term

[ B ]

For Sum, we need to find number of terms first.

Here,

a = 101

d = 99-101 = -2

An = 47

N= ?

An = a+(n-1)d

47 = 101+ (n-1)(-2)

(47-101)/2 = n-1

-54/-2 = n-1

N = 27+1

N = 28