Question

What is the sum of all odd integers between 1 and 50 which are divisible by 3?

Answer 1

Answer:

Step-by-step explanation:

first and last odd number between 1 and 50 are

3 and 48 (you can check for yourself)

now, we will see that an AP formed, with

a = 3, d = 3, l = 48, we need to find the sum

now, a +(n-1)d = l

3 +3 (n-1) = 48

after solving, n = 12

then,

from, sum of AP = n/2 (a +l)

sum = 6 * (3+ 48)

= 6 * 51

= 306

hope i was able to help

please mark as brainliest if i did

Answer 2

Answer:

224

Step-by-step explanation:

odd integers that are divisible by 3  between  1 to 50 are 9, 15, 21, 25, 27, 33, 45, 49 so 9+15+21+25+27+33+45+49=224