Three horses : Kanishka, Silver Streak and Arabian Knight are the only horses competing in a race and only one of these three can win the race. If Kanishka is twice as likely to win as Silver Streak and Sliver Streak is twice as likely to win as Arabian Knight, then what is the probability of Arabian Knight losing this race?
Mandeep has to create a password having 5 distinct characters using at least 2 digits (from 7 to 9) and at least 2 English vowels (from A, E, I, O and U). No character other than digits from 7 to 9 and vowels of English alphabets are allowed in that password. If the password starts with a digit, then it must end with an alphabet and if it starts with an alphabet, then it must end with a digit. Find the number of possible passwords that Mandeep can create.
In how many ways 5 rings can be placed in 4 fingers ??
For first ring there are 4 ways ... for second ring there are 5 ways ..(3 fingers that are left plus above and below the first ring put in some finger ).... for third ring we have 6 ways .. and so on ...
Mandeep has to create a password having 5 distinct characters using at least 2 digits (from 7 to 9) and at least 2 English vowels (from A, E, I, O and U). No character other than digits from 7 to 9 and vowels of English alphabets are allowed in that password. If the password starts with a digit, then it must end with an alphabet and if it starts with an alphabet, then it must end with a digit. Find the number of possible passwords that Mandeep can create.
Mandeep has to create a password having 5 distinct characters using at least 2 digits (from 7 to 9) and at least 2 English vowels (from A, E, I, O and U). No character other than digits from 7 to 9 and vowels of English alphabets are allowed in that password. If the password starts with a digit, then it must end with an alphabet and if it starts with an alphabet, then it must end with a digit. Find the number of possible passwords that Mandeep can create.
Mandeep has to create a password having 5 distinct characters using at least 2 digits (from 7 to 9) and at least 2 English vowels (from A, E, I, O and U). No character other than digits from 7 to 9 and vowels of English alphabets are allowed in that password. If the password starts with a digit, then it must end with an alphabet and if it starts with an alphabet, then it must end with a digit. Find the number of possible passwords that Mandeep can create.
For first ring there are 4 ways ... for second ring there are 5 ways ..(3 fingers that are left plus above and below the first ring put in some finger ).... for third ring we have 6 ways .. and so on ...So .. 4*5*6*7*8=6720 ways Team BV--Pratik Gauri
sir , can we assume here that the rings are diff ? This is if rings are diff , right ?
Mandeep has to create a password having 5 distinct characters using at least 2 digits (from 7 to 9) and at least 2 English vowels (from A, E, I, O and U). No character other than digits from 7 to 9 and vowels of English alphabets are allowed in that password. If the password starts with a digit, then it must end with an alphabet and if it starts with an alphabet, then it must end with a digit. Find the number of possible passwords that Mandeep can create.
When Sunil will be as old as his father is at present, Sunil will be five times as old as his son is at present. Also, by then Sunil €™s son will be six years older than the age of Sunil at present. The sum of the ages of Sunil €™s father and Sunil is 85 years at present. What is the sum of the ages of Sunil €™s son and Sunil at present?
When Sunil will be as old as his father is at present, Sunil will be five times as old as his son is at present. Also, by then Sunil's son will be six years older than the age of Sunil at present. The sum of the ages of Sunil's father and Sunil is 85 years at present. What is the sum of the ages of Sunil's son and Sunil at present?
41? trying orally... 11, 30, 55
Edit: Adding logic:
When Sunil will be as old as his father is at present, Sunil will be five times as old as his son is at present. => Sunil's father is 5 times the ages of the son say 5x and x.
Also, by then Sunil's son will be six years older than the age of Sunil at present. If Sunil had been 3x to start, son would be at that age later. So Sunil must be 3x - 3 initially so that later son will be 3x+3 i.e. 6 years more.
The sum of the ages of Sunil's father and Sunil is 85 years at present. So 5x + (3x-3) = 85 and so x = 11. hence 11, 30 and 55 are the ages so Sunil + son = 41
One day u will be awarded Noble prize for Environment (if this is ever instituted) for saving trees (paper) as u solve most of the q's orally ,
P is the product of first 30 multiples of 30. N is the total number of factors of P. In how many ways N can be written as the product of two natural numbers such that the HCF of these two natural numbers is 19?
When Sunil will be as old as his father is at present, Sunil will be five times as old as his son is at present. Also, by then Sunil's son will be six years older than the age of Sunil at present. The sum of the ages of Sunil's father and Sunil is 85 years at present. What is the sum of the ages of Sunil's son and Sunil at present?
One day u will be awarded Noble prize for Environment (if this is ever instituted) for saving trees (paper) as u solve most of the q's orally ,P is the product of first 30 multiples of 30. N is the total number of factors of P. In how many ways N can be written as the product of two natural numbers such that the HCF of these two natural numbers is 19?
N will be 19^2 * 2^x *3^y * 5^z so the 2s, 3s and 5s can be distributed in 2^(3-1) = 4 ways? regards scrabbler
. so we will anyway have 2 albhabetss in the p/w 
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