QUESTION 2
Easy
Look at the sequence of numbers on one column of the Ishango bone: 11, 13, 17, 19. What do these numbers have in common? List the next three numbers that fit this pattern.
SOLUTION
The four numbers 11, 13, 17, and 19 are prime numbers lying between 10 and 20.
The next three numbers that fit this pattern are 23, 29, and 31.
The next three numbers that fit this pattern are 23, 29, and 31.
Concept Note
Prime numbers are whole numbers greater than 1 whose only factors are 1 and itself(it cannot be divided by any number other than 1 or the number itself).