Here is a story that happen today so europa2433 they are not real or a bot they had the audacity to delete my answer about Formula so i find out this happens to every body about europa2433 i found out there not a bot or real i think because there are brainy bots that have a name like bot1 or bot 3 ok the brain bot that is verified

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for