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March-2015
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Q3 of 23 Page 1

Attempt any three of the following sub questions:

If two coins are tossed, then find the probability of the event that at least one tail turns up.

Sample space = {HH, HT, TH, TT}

Events with at least one tail (Favorable events) = {HT, TH, TT}




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2

Attempt any four of the following sub questions:

If one root of the quadratic equation kx2 – 8x + 15 = 0 is 3, then find the value of k.

3

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Area under different crops in a certain village is given below. Represent it by a pie diagram:


3

Attempt any three of the following sub questions:

Solve the following simultaneous equations using graphical method.
x + y = 6;
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3

Attempt any three of the following sub questions:

There is an auditorium with 3s rows of seats. There are 20 seats in the first row, 22 seats in the second row, 24 seats in the third row and so on. Find the number of seats in the twenty - fifth row.

Questions · 23
March-2015
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