1)If then find the value of .
2)In a class 36 students took an exam,the average score of the students who passed in the exam was 60,while the average score of the students who failed the exam was 42.The average scores of all students was 53.Find the number of students who failed in the exam.
3)1!3!5!7!=n!. Find the value of n.
5)If ,ab=96 and a>b>0.Then find the value of .
6)There is a two digit number such that if you put 3 on the left side of the ten's digit you will get a three digit number. Two times the three digit number is 27 times the two digit number ,Then fin the two-digit number.
7)The number of solutions of . For x≤3 and x,y,z are positive integers. A)0. B)1. C)2. D)3
8) .Then find n. A)1007. B)1008. C)1009. D)1006
9)In a certain year,the month of December has four Thursdays and four Saturdays.Then what day would be on the1st day of January next year? A)Monday. B)Thursday. C)Friday. D)None of these.
10)In a rectangle if the length is increased by 20% and width is decreased by 20% then what will be the change in its area? A)No change. B)4% decrease. C)5% increase. D)None of these
11)The number of three digit multiples of 3? A)300. B)330. C)333. D)None of these
12)In ΔABC ,,D,E,F are points that lie on AB,AC,CB respectively.AD=AE,CF=CE then . A)30° B)45° C)60° D)90°
13)In a cupboard there are seven compartments.Two identical balls are placed in the cupboard such that each compartment can have at most one ball.In how many ways can this be done?(A)17(B)18(C)20(D)21
14)I don't remember this question!!