Question : What is the sum of all two-digit numbers which are divisible by 9?
Option 1: 565
Option 2: 535
Option 3: 585
Option 4: 475
New: SSC CHSL tier 1 answer key 2024 out | SSC CHSL 2024 Notification PDF
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 585
Solution : Sum of an arithmetic series = $\frac{n}{2} × (\text{first term + last term})$ ⇒ Two digit numbers divisible by 9: 18, 27, 36,..., 99 (Total terms = 10) So, the sum = $\frac{10}{2} × (18 + 99) = 585$ Therefore, the sum of all two-digit numbers which are divisible by 9 is 585. Hence, the correct answer is 585.
Candidates can download this e-book to give a boost to thier preparation.
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Question : What is the sum of all three-digit numbers which are divisible by 15?
Question : What is the sum of all two-digit odd numbers?
Question : What is the sum of all two-digit even numbers?
Question : What is the sum of all three digits numbers which are divisible by 20?
Question : What will be the greatest number $32 \mathrm{a} 78\mathrm{b}$, which is divisible by 3 but NOT divisible by 9? (Where a and b are single digit numbers).
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile