Q. What is the sum of the first 28 terms in the following sequence?

Explanation:

Sum of first 28 terms

Let’s approach this step-by-step:

1) First, let’s identify the pattern in this sequence. It appears to be:
– Count up from 1 to n
– Then count back down to 1
– Repeat with n increasing by 1 each time

2) Let’s write out the first 28 terms:
1, 1, 2, 1, 3, 2, 1, 4, 3, 2, 1, 5, 4, 3, 2, 1, 6, 5, 4, 3, 2, 1, 7, 6, 5, 4, 3, 2

3) Now, let’s sum these numbers:
1 + 1 + 2 + 1 + 3 + 2 + 1 + 4 + 3 + 2 + 1 + 5 + 4 + 3 + 2 + 1 + 6 + 5 + 4 + 3 + 2 + 1 + 7 + 6 + 5 + 4 + 3 + 2

Calculating this sum: The sum is 84