Find a number with its letters in alphabetical order?

Question

Complete the words below using three consecutive letters in alphabetical order, e.g. _ _ A _ U S; add A B and C it would become ABACUS.

1. C O _ _ E _,

2. _ _ _ O R M,

3. S O _ E _ _,

4. _ U _ G _ L,

5. S _ O _ _ Y,

6. _ O B U _ _.

Answer 1

Forty

AFAIK It is the only number in English with its letters in alphabetical order.

Answer 2

As per my knowledge only FORTY is the number which has letters in alphabetical order.

Answer 3

forty(starts with F , ends at Y)