Q3 of 23 Page 1

Attempt any three sub-question from the following:

Solve the following quadratic equation by factorization method: x2 – 5x – 36 = 0.

Given: x2 – 5x – 36 = 0

⇒ x2 – (9 – 4)x – 36 = 0


⇒ x2 – 9x + 4x – 36 = 0


⇒ x (x – 9) + 4 (x – 9) = 0


⇒ (x – 9) (x + 4) = 0


More from this chapter

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2

Attempt any four sub-questions from the following:

Three coins are tossed simultaneously, find S and n(S).

 3

Attempt any three sub-question from the following:

Find the first three terms to the sequence, whose nth term is tn = 4n – 3

 3

Attempt any three sub-question from the following:

Two-digit numbers are formed from the digits 0, 1, 2, 3, 4 where digits are not repeated. Find the probability of the events that:


(a) The number formed is an even number.


(b) The number formed is a prime number.

 3

Attempt any three sub-question from the following:

Below is given the distribution of money (in) collected by students for flood relief fund:



Find mean of money (in) collected by a student using ‘Direct Method’.