Question : What is the average of the cubes of the first 7 natural numbers?
Option 1: 84
Option 2: 105
Option 3: 96
Option 4: 112
New: SSC MTS Tier 1 Answer key 2024 out
Don't Miss: Month-wise Current Affairs | Upcoming Government Exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 112
Solution : The cubes of the first 7 natural numbers are: $1^3 = 1$, $2^3 = 8$, $3^3 = 27$, $4^3 = 64$, $5^3 = 125$, $6^3 = 216$, $7^3 = 343$ Average = $\frac{\text{Sum of observations}}{\text{Total observation}}$ = $\frac{1 + 8 + 27 + 64 + 125 + 216 + 343}{7} = 112$ Hence, the correct answer is 112.
Application | Cutoff | Selection Process | Preparation Tips | Eligibility | Exam Pattern | Admit Card
Question : The average of 4 numbers is 45. The average of the first two numbers is thrice the average of the other two numbers. What is the sum of the first two numbers?
Option 1: 122
Option 3: 125
Option 4: 135
Question : What is the average of first 10 natural numbers?
Option 1: 5.5
Option 2: 10
Option 3: 5
Option 4: 10.5
Question : There are 32 consecutive natural numbers. The average of the first 13 numbers is $x$. What is the average of the next 19 numbers?
Option 1: $x+15$
Option 2: $x+16$
Option 3: $x+17$
Option 4: $x+18$
Question : What is the average of the squares of the first five natural numbers?
Option 1: 11.5
Option 3: 12.5
Option 4: 11
Question : The average of 7 consecutive odd numbers is A. If the next 3 and the previous 2 odd numbers to these 7 odd numbers are also included, what is the new average of these 12 consecutive odd numbers?
Option 1: A + 1
Option 2: A – 2
Option 3: A + 2
Option 4: A + 3
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile