公式中∑代表总和，x拨代表x的算术平均值，^2代表二次方，Sqr代表平方根。
2. There are six special like ^, &, *, $, @, %. How many different patterns can be formed using all six Given that repeation is not allowed.
Ans: 720
3. In a class of 20 students, one half of the students are boys, if a teacher has to select 7 students and the first 6 are girls
Col a: What is the probability that the 7th student is a girl
Col b:2/7
Ans: C
4. 0.3187/15.92
Ans: 0.02
5. A triangle was given whose perimeter was 32 and two of its sides were given as 12 & 13. (Question was given like this..... they had shown a right angled triangle in figure but did not marked angle as right angled it was marked as X. Side opposite to it was marked as 13 and one of the adjacent sides was given as 12.
Col A : X
Col B : 90
6. If a number is divisible by 5 the remainder is 3 and when the same number is divided by 7 the remainder is 4. What is the least possible number?
Ans:18
7. A rope of length x is cut into two halves. One of the length exceeds the other by 5
Col a: length of the shorter one
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