Q2 of 23 Page 1

Attempt any four of the following subquestions:

For a certain frequency distribution, the values of Assumed mean (A) = 1300, Σƒ1d1 = 900 and Σƒ1 = 100. Find the value of mean (x).


⇒


⇒ x = 1300 + 9


= 1309


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2

Attempt any four of the following subquestions:

Find the value of discriminant () for the quadratic equation: x2 + 7x + 6 = 0.

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Attempt any four of the following subquestions:

Write the equation of X - axis. Hence, find the point of intersection of the graph of the equation x + y = 5 with X - axis.

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Attempt any four of the following subquestions:

Two coins are tossed simultaneously. Write the sample space (S), n(S), the following event A using set notation and n(A), where ‘A is the event of getting at least one head.’

 2

Attempt any four of the following subquestions:

Find the value of k for which the given simultaneous equations have infinitely many solutions:


Kx + 4y = 10;


3x + 2y = 5.