31 . In school there are more than 501 student,they play cricket and hockey, exactly 20% play hockey and exactly 28% play cricket. How many student in school?

1. 550 2. 600 3. 700 4. None of these

32. There are 7880 ball of radius 1 cm, if the ball are arranged in a form of pile such that top has 1 ball,2nd layer has 3,3rd has 6,4th has 10,5 has 10 and so on.how many levels are there.

a. 33 b. 32 c. 34 d. 31

33. How many no less than 400 are divisible by atleast 2,3,4,6,9,14 or 21.

a. 266 b. 276 c. 321 d. 588

34. What is the maximum volume of right circular cone which can be cut from solid cuboid having dimension 12*10*15?

35. Sima travel 10 km from her home to office. Initially she walk for. 5 km at 6 kmpl and then take bus which run at speed of 40 kmpl then total time taken by the sima to reach office ?

36. Which of the following is not a data type ?

1) Boolean 2) character 3) int 4) arr

37. If 1/a+1/b+1/c=a+b+c, (a+b+c),(abc)is not equal to zero,then what is the value of (a+b)(b+c)(c+a)?A)equals to zero b)less than zero c)greater than zero d)can not be determined

38. If n greater than 100 and sum of 101+102+------+n, what is the the probability that the sum will be divisible by (n-100)

a) 3/4 b) 1/3 c) 1/2 d) none of above

39. How many numbers in between the 1 to 100 whose factors will be prime ie like 3= 1,3 ?

40. If |a+6|=11 and |2b-12|=8 then min value b/a ?

1. 550 2. 600 3. 700 4. None of these

32. There are 7880 ball of radius 1 cm, if the ball are arranged in a form of pile such that top has 1 ball,2nd layer has 3,3rd has 6,4th has 10,5 has 10 and so on.how many levels are there.

a. 33 b. 32 c. 34 d. 31

33. How many no less than 400 are divisible by atleast 2,3,4,6,9,14 or 21.

a. 266 b. 276 c. 321 d. 588

34. What is the maximum volume of right circular cone which can be cut from solid cuboid having dimension 12*10*15?

35. Sima travel 10 km from her home to office. Initially she walk for. 5 km at 6 kmpl and then take bus which run at speed of 40 kmpl then total time taken by the sima to reach office ?

36. Which of the following is not a data type ?

1) Boolean 2) character 3) int 4) arr

37. If 1/a+1/b+1/c=a+b+c, (a+b+c),(abc)is not equal to zero,then what is the value of (a+b)(b+c)(c+a)?A)equals to zero b)less than zero c)greater than zero d)can not be determined

38. If n greater than 100 and sum of 101+102+------+n, what is the the probability that the sum will be divisible by (n-100)

a) 3/4 b) 1/3 c) 1/2 d) none of above

39. How many numbers in between the 1 to 100 whose factors will be prime ie like 3= 1,3 ?

40. If |a+6|=11 and |2b-12|=8 then min value b/a ?