MATHEMATICS QUIZ PRELIMS

   Find the missing number in the triangle

• 16

• 96

• 50

• 80

  Which of the following numbers is a perfect square?

• 1022121         

• 2042122

• 3063126

•        4083128

        If A x B = 24, B x C = 32, C x D = 48, then A x D

• Can not be found

• is a perfect square

• is a perfect cube

•      is odd

      How many 9-digit positive integers are there, the sum of squares of whose digits is 2?

• 8

• 9

• 10

• 11

       What is the maximum sum of the number of Saturdays and Sundays in a leap year?

• 104

• 105

• 106

• 107

    In a room we have one grandfather, two fathers, two sons, and a grandson. The age of one father is 7 times the age of his son. The age of other father is twice his son’s age. Assuming that there are only 3 people in the room and the grandfather is 70 years old, how old is the grandson?1.        In a room we have one grandfather, two fathers, two sons, and a grandson. The age of one father is 7 times the age of his son. The age of other father is twice his son’s age. Assuming that there are only 3 people in the room and the grandfather is 70 years old, how old is the grandson?

• 1

• 2

• 5

• cannot be determined

        In the figure, the numbers of circles in the blank rows must be

• 12 and 20       

• 13 and 20       

• 13 and 21

•        10 and 11

        Find the missing letter.

• P

• K

• J

• L

       AB is the diameter of a circle. The chord CD is perpendicular to AB intersecting it at P. if CP = 2 and PB = 1, the radius of circle is

• 1

• 2

• 2.5

• 5

     What is the minimum number of straight lines required  to connect the 9 points without lifting the pen or retracing.

• 3

• 6

• 5

• 4