alleryStart learning →What is the sum of the first five odd numbers, 1 + 3 + 5 + 7 + 9?
A25
B24
C30
D20
Answer & Solution
Correct answer: A. 25
The sum of the first n odd numbers is n squared, so five of them give 25.
Keep practising Integer Sequence
Browse all Integer Sequence questions for SSC CGL, or explore more Reasoning topics.
Related questions
By Brun's theorem, the sum of reciprocals of all twin primes is what?Which pair is a twin prime pair?How many primes lie between 1 and 20?What is the smallest prime greater than 50?What is the 15th square number?Using long (2 units) and short (1 unit) syllables, how many patterns fill 4 units?Which computer data structure is named after the Fibonacci numbers?Fibonacci numbers show up in biology in which feature of plants?