Respuesta :

(12 + 22 + 30 + 36 + 40 + 42) × 2 = 364
12 days of Christmas
Day 1 and day 2 = 3 gifts
Day 3 and day 4 = 7 gifts
Day 5 and day 6 = 11 gifts
day 7 and day 8 = 15 gifts
day 9 and day 10 = 19 gifts
day 11 and day 12 = 23 gifts

3+7+11+15+19+23 = 78 gifts

Otras preguntas