Genesis 18:31

18:31 Abraham ¹  said, “Since I have undertaken to speak to the Lord, what if only twenty are found there?” He replied, “I will not destroy it for the sake of the twenty.”

Genesis 31:38

31:38 “I have been with you for the past twenty years. Your ewes and female goats have not miscarried, nor have I eaten rams from your flocks.

Genesis 32:15

32:15 thirty female camels with their young, forty cows and ten bulls, and twenty female donkeys and ten male donkeys.

[18:31]  ¹ tn Heb “he”; the referent (Abraham) has been specified in the translation for clarity.