Question

after 100 meiosis how many seeds will be produced

Answer 1

If I want to produce 100 seeds. Then the no. of meiotic divisions is 125 which can be calculated by the formula x + x / 4.
x = no. of seeds produced.

Assuming that you have studied megasporogenesis and microsporogenesis. To produce a seed, you require the production of pollen and egg and their fusion.