Question

if only one sperm goes for fertilization , then what about the other million sperms ? where do they go ?​

Answer 1

Answer:

If one sperm does make its way into the fallopian tube and burrows into the egg, it fertilizes the egg. The egg changes so that no other sperm can get in. At the instant of fertilization, your baby's genes and sex are set. If the sperm has a Y chromosome, your baby will be a boy.

Answer 2

Answer:

$\begin{gathered}\implies \sf \blue{T\:is \:midpoint\:of\:PQ}\\ \implies \sf \blue{PT\: is\:4cm}\\ \implies \sf \blue{(PT)^2+(TS)^2=(PS)^2}\\ \implies \sf \blue {4^2+(TS)^2=(8.5)^2}\\ \implies \sf \blue {(TS)^2=72.25-16}\\ \implies \sf \blue {TS=7.5}\\ \implies \sf \blue {\triangle TSQ\: is\: a\:right \:angle\:so}\\ \implies \sf \blue {(7.5)^2+4^2=(QS)^2}\\ \implies \sf \blue {QS=72.25\:is\:your\:answer}\end{gathered}$