Start learning 50% faster. Sign in now
Let the number of Boys participating in the tournament be ‘n’ Since, every participant played two games with every other participant, Therefore, the total number of games played among the boys is 2 × nC2 = n(n-1) And the number of games played with each girls = 2n But since there are two girls, hence the total number of games boys played with 2 girls = 2 × 2n = 4n Now, according to the question { n(n-1)} – 4n = 204 n2 - 5n – 204 = 0 n2 - 17n + 12n – 204 = 0 n(n-17)+ 12 (n-17)= 0 n=17,-12 Ignoring negative value We get, n=17 ∴ total number of Participants = 17 + 2 = 19
FSSAI has issued an advisory in which it has put ban on material for wrapping and packaging of food items.
Dapog method of raising seedlings in paddy crop requires how many days to get ready for transplant?
Which season in India receives the most important rainfall, contributing 80–95% of the total annual rainfall?
What is the floor space required for pregnant cow?
Which insect is a major pest of sugarcane, known for causing "dead heart" in young plants?
Sesame Phyllody disease caused by______
Which regions in India are specially considered for the Special Area Games Support Programme by the Sports Authority of India?
What is the nitrogen use efficiency in rice?
Important grassy weed of transplanted rice is:
The herbicide that is selective to broad leaved weeds is