Related Questions

In a rare coin collection, all coins are either pure gold or pure silver , and there is initially one gold coin for every three silver coins . With the addition of 10 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. Based on this information , how many total coins are there now in this collection (after the acquisition)?
A 40
B 50
C 70
D 90
Two unbiased coins are tossed. What is probability of getting at most one tail ?
A $$\frac{{1}}{{2}}$$
B $$\frac{{2}}{{3}}$$
C $$\frac{{3}}{{2}}$$
D $$\frac{{3}}{{4}}$$
A certain sum of money consists of 30 coins, some of which are 10 paisa coins and the rest are 5 paisa coins. If the total value of the coins is Tk. 2, what is the number of 10 paisa coins?
A 15
B 12
C 10
D 5
A certain sum of money consists of 30 coins, some of which are 10 paisa coins and the rest are 5 paisa coins . If the total value of the coins is TK. 2 , what is the number of 10 paisa coins?
A 10
B 15
C 12
D 8
When six fair coins are tossed simultaneously, in how many of the outcomes will at most three of the coins turn up as heads?
A 25
B 41
C 22
D 42
E 31
Two unbiased coin are tossed .What is the probability of getting at most one head?
A $$\frac{{1}}{{4}}$$
B 2
C $$\frac{{3}}{{4}}$$
D 1
Three coins are tossed. Find the probability of exactly 2 heads-
A 38
B 12
C 18
D None
Two coins are tossed. What is the probability of getting at most one head?
A 12
B 14
C 34
D 16
The probability is 1/2 that a coin will turn up heads on any toss. If the coin is to be tossed three times, what is the probability that on at least one of the tosses the coin will turn up tails?
A 1/8
B 1/2
C 7/8
D None of these
When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?
A 1/8
B 1/4
C 1/3
D 3/8

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