Question

Decide whether the following sequence is A.p, if so find 20th of progression, 7, 13, 19, 25. term​

Answer 1

Answer:

common difference is 6 so it is in AP

7,13,19,25,31,37,43,49,55,61,67,73,79,85,91,97,103,109,115,121

That's it the formula is An=a+(n-1)d

where,

a=first term of AP

n=which term you need to find that term

d=common difference

7+(20-1)6

7+19×6

121

Step-by-step explanation:

hope this may help you mark as brainliest answer

Answer 2

Answer:

yes this is an AP because the common difference is same . and 20th progression is 121.

d= 13 -7

= 6

an= a+(n-1)d

= 7+(20-1)6

= 7+ 19×6

= 7 +114

= 121