Three coins are tossed together. Write all the possible outcomes.… - Vidyadip

Question

Three coins are tossed together. Write all the possible outcomes. Now, find the probability of getting: at least one tail

✓

Answer

When three coins are tossed, possible outcomes are:
HHH, HHT, HTH,HTT,THH, THT,TTH,TTT
Total possible outcomes $=8$
Favorable outcomes for at least one tails = HHT,THH,HTH,HTT,THT,TTH,TTT
Number of favorable outcomes $=7$
$
P (\text { at least one tail })=\frac{7}{8}
$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 marks sum]" from Probability→Probability — all question types→Mathematics STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

A ladder is placed along a wall such that its upper end is resting against a vertical wall. The foot of the ladder is $2.4 \ m$ from the wall and the ladder is making an angle of $680$ with the ground. Find the height, upto which the ladder reaches.

Using the Factor Theorem, show that:$(x – 2)$ is a factor of $x^3 – 2x^2 – 9x + 18$. Hence, factorise the expression $x^3 – 2x^2 – 9x + 18$ completely.

The ratio between the altitudes of two similar triangles is 3 : 5; write the ratio between their:
(i) medians (ii) perimeters (iii) areas

Two right circular solid cylinders have radii in the ratio $3 : 5$ and heights in the ratio $2 : 3,$ Find the ratio between their : curved surface areas.

Find the mean of the following distribution:

x	4	6	9	10	15
f	5	10	10	7	8

Evaluate without using trigonometric tables,
$\sin ^2 28^{\circ}+\sin ^2 62^{\circ}+\tan ^2 38^{\circ}-\cot ^2 52^{\circ}+\frac{1}{4} \sec ^2 30^{\circ}$

Find the distance of a point $(7 , 5)$ from another point on the x - axis whose abscissa is $-5.$

Find the seventh term of the G.P. :
$\sqrt{3}+1,1, \frac{\sqrt{3}-1}{2}..............$

Prove.$\tan ^2 A-\tan ^2 B=\frac{\sin ^2 A-\sin ^2 B}{\cos ^2 A \cdot \cos ^2 B}$

Given matrix $A =\left[\begin{array}{c}4 \sin 30^{\circ}, \cos 0^{\circ} \\ \cos 0^{\circ}, 4 \sin 30^{\circ}\end{array}\right]$ and $B=\left[\begin{array}{l}4 \\ 5\end{array}\right]$ If $AX = B$. Write the order of matrix $X$.