Start learning 50% faster. Sign in now
Explanation: World Ozone Day is celebrated on 16th September each year to commemorate the signing of the Montreal Protocol, which is an international environmental treaty aimed at phasing out the production and consumption of Ozone Depleting Substances (ODS). This treaty came into force on this day in 1987.
'A + B' means 'A is the wife of B'.
'A – B' means 'A is the father of B'.
'A × B' means 'A is the brother of B'.
'A ÷ B'...
How is P related to M?
If T is female then how T related to Z?
How N related to M?
How many male members are there in the family?
V is married to F. S is the daughter of V, who is the mother-in-law of L. B is the son of L. F has only one child. How is F related to L?
How many female persons are there in the family?
If ‘A % B’ means ‘A is the daughter of B’, ‘A & B’ means ‘A is the wife of B’, and ‘A # B’ means ‘A is the son of B’, then how i...
How is F related to C?
How is Q related to N?