The average of first 10 prime numbers is? A.10 B.12.5 C.12.9 D.15.5 Answer and Feedback Answer:C Feedback:Sum of 10 prime no. = 129 Average = 129/10 = 12.9 Questions in to this exercise. Do you want test? Practice Averages Online Test 1 | Englishfreetest.com Test Share this post some other questions in the test. The average of first 10 even numbers is? The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is? The average of first ten prime numbers which are odd is? The average of first 10 natural numbers is? The average of first 10 odd numbers is? The average of first 10 prime numbers is? The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy? The average of 1st 3 of 4 numbers is 16 and of the last 3 are 15. If the sum of the first and the last number is 13. What is the last numbers? The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation? The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average, one number namely 36 was wrongly read as 26. The correct average is? Some other questions you may be interested in. There were a number of notable inter-racial marriages in The Silmarillion. The first one mentioned was between a mortal and a Maia, a servant of the Valar. What were their names? In The Silmarillion, Carcharoth slew Beren after swallowing a Silmaril. What was Carcharoth? In the universe created by J. R. Tolkien, the Valar were gods and were to be worshipped by men and elves alike. What is the name of the main character in The Dark Tower? What is the name of the dog-like billy-bumbler in the Dark Tower series? In the Dark Tower series, the woman known as Susannah has a dissociative identity disorder. How many personalities does she have? In the Dark Towere series of books, Eddie Dean mysteriously resembles which one of Rolands dead friends? What is the name of Rolands first love in The Dark Tower? There are a number of evil spheres in the Dark Tower books. What is the name of the most sinister of them? Roland, the protagonist of the Dark Tower books, is a descendant of this great king.