Attempt any three subquestions from the following:

Solve the following quadratic equation by completing square: z² + 4z-7 = 0.

Attempt any four subquestions from the following:

For a centain frequency disribution, the value of Mean is 101 and Median is 100. Find the value of Mode.

Attempt any four subquestions from the following:

The following pie diagram represent expentiture on different items in constructing a builiging. If the total construction cost of builing is Rs. 5,40,000, answer the following questions:

a. Find the central angle for labour expenditure.

b. Find the expenditure on labour.

Attempt any three subquestions from the following:

Two dice are thrown. Find the probability of the following events:

Event A: The product of the numbers on their upper faces is 10.

Event B: The sum of the numbers on their upper faces in multiple of 9.

Attempt any three subquestions from the following:

The following is the distribution of the size of cetain farms from a taluka:

Find the median size of farms.