" icket team buys "

The coach of a cricket team of M.K. Nagar High school buys 3 bats and 6 balls for Rs. 3900. Later he buys one more bat and 2 balls for Rs. 1300.

The coach of a cricket team of M.K.Nagar High School buys 3 bats and 6 balls for Rs. 3900. Later he buys one more bat and 2 balls for Rs. 1300. Identify the unknowns in each situation. We observe that there are two unknowns in each case.

In a cricket team of 14 players 6 are bowlers . How many different teams of 11 players can be selected keeping at least 4 bowlers in the team ?

Of the members of three athletic teams in school 21 are in the cricket team, 26 are in the hockey team and 29 are in the football team. Among them, 14 play hockey and cricket, 15 play hockey and football , and 12 play football and cricket . Eight play all the three games. The total number of members in the three athletic teams is :

Compute coefficient of variation for team A and B. Which team is more consistent?

For a trophy, 16 teams participate, oumbered 1-16 according to their rankings. In the qualifier matches, the teams face their immediate next lawer ranked teame team-1 plays team 2. team-3 plays team- and so on. It bar been observed that the lower ranked team always wins. Which two tearns might play a semi-final match?

The probability that a man buying a shirt is 0.2 and that for buying a trouser is 0.3. The probability that he will buy a shirt given that he buys a trouser is 0.4. i. Find the probability that he will buy both a shirt and a trouser ii. Find the probability that he will buy a trouser, given that he buys a shirt.