Question

Find the sum of 6 +13 +20 +_____+97​

Answer 1

Answer:

Step-by-step explanation:

a=6 and d=7

97=a+(n-1)d

97=6+(n-1)7

n-1=13

n=14

sum={(n/2)×(2a+(n-1)d}

=7×103

=721

thanks

Answer 2

Answer:

58

Step-by-step explanation:

6+ 13+ 20= 39

So, to fill the blank,

We need, 97-39= 58

58 is the answer.