Get Started with ixamBee
Start learning 50% faster. Sign in now
Sum of squares of first 'n' natural numbers = n × (n + 1) × (2n + 1) ÷ 6
So, average = n × (n + 1) × (2n + 1) ÷ 6n = (n + 1) × (2n + 1) ÷ 6
= (41 + 1) × (2 × 41 + 1) ÷ 6
= 42 × 83 ÷ 6
= 581
How many countries are there in Indo - Pacific Economic Framework?
What is the total allocated budget for the continuation of the Umbrella Scheme on 'Safety of Women' spanning from 2021-22 to 2025-26?
Select the option that shows the correct match of an organisation and its headquarters.
The average marks of Madhu in four subjects are 64, and she got 69 marks in the fifth subject. What is the new average of marks obtained by Madhu in 5 s...
Against which team did Sachin Tendulkar make his 100th international century?
What is the name of the device that fraudsters often use to collect card data by installing it at gas pumps or ATM machines?
Which device was invented by Carl Friedrich Gauss and Wilhelm Eduard Weber in 1833?
Who was the first foreigner to receive Bharat Ratna Award, the highest civilian award of the Republic of India?
With which of the following, Ministry of Defence, on March 29, 2023, signed contracts to give another boost to 'Aatmanirbharta' in defence?
1...
In August 2020, two coastal villages of which of the following states were declared 'Tsunami Ready' by the Intergovernmental Oceanographic Commission o...
