Q9 of 49 Page 1

Two coins are tossed simultaneously. Find the probability of getting at least one head.

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

E (at least one head) = {HH, HT, TH}

P (E) =

In Fig. 2, two circles touch each other at the point C. Prove that the common tangent to the circles at C, bisects the common tangent P and Q.

In Fig. 3, a quadrilateral ABCD is drawn to circumscribe a circle. Prove that AB + CD = AD + BC

The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes.

For what values of k, are the roots of the quadratic equation: (k + 4) x² + (k + 1) x + 1 = 0 equal?