Important Question Mock Test
1. if the H.C.F. of 210 and 55 is expressed in the form of 210 x5 +55 y , find the value of y2
(A)381
(B)368
(C)361
(D)19
ANS [ c ]
2. The three sides of a right triangle have integral lengths , which form an arithmetic progression . Choose one of he possible lengths from the given options .
(A)22
(B)58
(C)81
(D)361
ANS [ c ]
3. The mean of 150 items was found to be 60 . Later on , it was discovered that the values of two items were taken as 52 and 8 instead of 152 and 88 respectively . Fijd the correct mean .
(A) 6.15
(B)60.7
(C) 61.2
(D) 6.72
ANS [ c ]
4. What is the ratio in which p (2.5 ) divides the line joining the points (8,2) and (-6,9) ?
(A) 3:4
(B) 1:3
(C) 4:3
(D) 1:4
ANS [ a ]
5. In a class of 100 students , the mean marks obtained in ;a subject is 30 and in another class of 50 students , the mean marks obtained in the same subject is 60 . what is the mean marks obtained by the students of two classes taken together ?
(A) 40
(B)45
(C)48
(D)50
ANS [ a ]
6. The age of a man is the square fo his son’s age A year ago , the man’s age was 8 times the age of his son what is the present age of the man ?
(A) 47yr
(B)49 yr
(C)36 yr
(D)48 yr
ANS [ b ]
7. A bucket of height 16 cm made up of metal sheet is in the form of frustum of a right circular cone with radii of its lower and upper ends as 3cm and 15 cm respectively what is the slant height of the bucket ?
(A) 15cm
(B)20cm
(C) 5cm
(D) 12cm
ANS [ b ]
8. The sum to ‘n’ terms of an arithmetic sepuence is given by Sn = (5n -3 ) What is its pth term ?
(A) P (5P -3)
(B) 5P -3
(C) 2(5P -3)
(D) 5P -7
ANS [ c ]
9. How many three digit numbers are divisible by 6?
(A) 102
(B)150
(C) 151
(D)966
ANS [ b ]
10. If mean : median of a certain data is 2:3 , What is the ratio of its mode and mean
(A)3:2
(B)5:2
(C)3:5
(D)2:3
ANS [ b ]
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