ANSWER:

It is authentic that martyrs will get 72 houris in paradise, but this hadeeth is just applicable on martyrs but not those who commit suicide bombs. Those who commit suicide bombing will go straight to hell for killing themselves and others and they are not martyrs! 

I am from Srilanka. At the moement there is a racisit movement aginst muslims as a result of the recent isis bomb blasts in my country. There is a popular accusation against islam saying that the martyer of muslims (the terorists) have sucide bombed as they will get 72 virgins in paradise. I am trying to find if it says so in Quran and if the number 72 is true. Im asking on behalf of my nation