The probability of getting atmost two heads when three coins are tossed is
A) 1/8
B) 8
C) 7/8
D) 3/8
0 Answers
A die is thrown. Find the probability of (i) getting a 5 (ii) getting a 2 or a 3 (iii) getting an odd number (iv) getting a prime number (v) getting a
Correct Answer - `(i) 1/6 (ii) 1/3 (iii) 1/2 (iv) 1/2 (v) 1/3 (vi) 1/3`
2 Answers 1 views
In a single throw of two dice, find the probability of (i) getting a sum less than 6 (ii) getting a doublet of odd numbers (iii) getting the sum as a
Correct Answer - `(i) 5/18 (ii) 1/12 (iii) 5/12`
2 Answers 1 views
Three unbiased coins are tossed once. Find the probability of getting (i) exactly 2 tails (ii) exactly one tail (iii) at most 2 tails (iv) at least 2
Correct Answer - `(i) 3/8 (ii) 3/8 (iii) 7/8 (iv) 1/2 (v) 7/8`
2 Answers 1 views
A coin is tossed 500 times and we get heads : 285 times and tails : 215 times When a coin is tossed at random , what is probability of getting (i) a h
Correct Answer - (i) 0.57 (ii) 0.43
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Two coins are tossed 400 times and we get two heads : 112 times, one head , 160 times , 0 head , 128 times . When two coins are tossed at random , wha
Correct Answer - (i) 0.28 (ii) 0.4 (iii) 0.32
2 Answers 1 views
The probability of getting a head when a coin is tossed is
Correct option is (C) 1/2 When a coin is tossed, possible outcomes are head and tail. S = {H, T} Total outcomes is n(S) = 2 Number of favourable outcomes of event of getting...
2 Answers 1 views
If two identical coins are tossed, the probability of getting two heads is
Correct option is (B) 1/4 If two identical coins are tossed, then possible outcomes are S = {HH, HT, TH, TT}. Let event E be event of getting 2 heads. \(\therefore\) E = {HH} \(\therefore\) n(E)...
2 Answers 1 views
The probability of getting atmost two heads when three coins are tossed is
Correct option is (C) 7/8 If three coins are tossed then possible outcomes are S = {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT} \(\therefore\) Total outcomes is n(S) = 8 Let event E...
2 Answers 1 views
If two coins are tossed then the chance(probability) of getting 2 heads is
Correct option is (B) 1/4 If two coins are tossed then possible outcomes are S = {HH, HT, TH, TT} Let event E = Getting two heads = {HH} \(\therefore\) n(E) = 1 & n(S)...
2 Answers 1 views