10 Dhu al-Hijjah: Aqabah only = seven pebbles.
11 Dhu al-Hijjah: Three Jamarahs = 21.
12 Dhu al-Hijjah: Three Jamarahs = 21.
13 Dhu al-Hijjah: Three Jamarahs = 21.
This gives 7 + 21 + 21 + 21 = 70 throws for 10–13 inclusive. Counting just the three days 11–13 gives 63 throws.
Opening interactive controls...
Book of Hajj: Return to Mina, Stoning the Three Jamarahs, and Days of Tashriq
10 Dhu al-Hijjah: Aqabah only = seven pebbles.
11 Dhu al-Hijjah: Three Jamarahs = 21.
12 Dhu al-Hijjah: Three Jamarahs = 21.
13 Dhu al-Hijjah: Three Jamarahs = 21.
This gives 7 + 21 + 21 + 21 = 70 throws for 10–13 inclusive. Counting just the three days 11–13 gives 63 throws.