Number of Flowers represents

When it comes to conveying a message through the gift of flowers, you will need to consider the meaning behind the number of flowers you are giving.
Very often, different numbers carry a very different set of meaning. 
On top of that, different colour of roses too convey different meaning and can actually play a huge role in the message you send someone.
Number of Meaning
: It indicates “Love at First Sight”
2 : Give 2 roses to show that you are deeply in love with them
3 : I Love You
4 : To Signify nothing will stand between the two of us.
5 : Express your care and love for that special someone. Gift 5 roses to express how much you care for your partner or a good friend.
6 : The perfect way to say, “I want to be yours”. 
7 : I’m infatuated with you.
8 : A symbol of support for friends or family that are going through a difficult time.
9 : To signify eternal love and show that you want to spend the rest of your life with that significant other.
10 : They are perfection.
12 : A simple way to ask your crush to be yours.
13 : Friends forever.
18 : To tell a loved one to stay young and beautiful. It is a symbol of trueness and sincerity.
24 : Signify that special someone is always on your mind 24/7.
30 : Express your faithfulness to your significant other.
33 : To show her/him, “I Love you” with great affection.
40 : My love for you is genuine.
47 : To signify that you are my one and only.
50 : Your unconditional love that you will never regret.
66 : Nothing’s gonna change my love for you.
77 : You are my soul mate.
88 : To apologise from the bottom of your heart for a mistake you made.
99 : I will love you till the day I die.
100 : I am totally devoted to you.
 That’s about the meaning of every number of flowers used in a bouquet.