A survey was conducted on 100 people to find out whether they had read recent issues of Golmal, a monthly magazine. The summarized information regarding readership in 3 months is given below:
Only September: 18; September but not August: 23; September and July: 8; September: 28, July: 48; July and August: 10; None of the three months: 24
What is the number of surveyed people who have read exactly two consecutive issues (out of the three)?
Each of the 11 letters A, H, I, M, 0, T, U, V, W, X and Y appears same when looked at in a mirror. They are called symmetric letters. Other letters in the alphabet are called asymmetric letters.
How many four-letter computer passwords can be formed using only the symmetric letters (no repetition allowed)?
If \[{{(1+x)}^{n}}={{C}_{0}}+{{C}_{1}}x+....+{{C}_{n}}{{x}^{n}},\] then the value of \[\sum\limits_{r=0}^{n}{\sum\limits_{s=0}^{n}{{{C}_{r}}}}{{C}_{s}}\]is equal to r=0 s=0
Consider the points \[A=(3,4)\] and\[B=\left( 7,\text{ }13 \right)\]. If 'P' is a point on the line \[y=x\] such that \[PA+PB\]is minimum, then coordinates of 'P' are
A circle is drawn to pass through the extremities of the latus rectum of the parabola\[{{y}^{2}}\text{ }=\text{ }8x\]. It is given that this circle also touches the directrix of the parabola. Radius of this circle is equal to
If there are three athletic teams in a school, 21 are in the basketball team, 26 in hockey team and 29 in the football team. 15 play hockey and basketball, 15 play hockey and football, 12 play football and basketball and 8 play all the games. The total number of members is
Rajdhani Express going from Bombay to Delhi stops at five intermediate stations, 10 passenger enter the train during the journey with 10 different tickets of two classes.
The number of different sets of tickets they may have is
18 mice were placed in two experimental groups and one control group with all group equally large. In how many ways can the mice be placed into three groups?