What is the next number in the following series of numbers?
3,6,9,15, 24, 39,

A 25
B 51
C 63
D 58

63

(Next term=sum of two previous terms)

Step-by-step explanation:

To get a next term for this sequence you add it's two previous terms together.

Examples:

Given 1st and 2nd term is 3 and 6 respectively we have the following:

3rd term = 2nd term + 1st term=6+3=9.

4th term=3rd term + 2nd term=9+6=15.

5th term=4th term + 3rd term=15+9=24.

6th term=5th term +4th term=24+15=39.

7th term=6th term + 5th term=39+24=63.

Step-by-step explanation:

the sequence in this series of numbers is add the last 2 numbers

e.g : 3+6=9

6+9=15

9+15=24

15+24=39

24+39=next number

63=next number

63=C

i think it would be 42cm