Only 3 stamens remain (half of 6). Each anther has 2 lobes, and each lobe has 26 PMC, thus total PMCs = 3 × 2 × 26 = 156. Each PMC gives 4 pollen grains (male gametes), so 156 × 4 = 624 pollen grains. Each pollen grain contains 2 male gametes, so 624 × 2 = 1248 × 2 = 2496.