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Question: on dividing 190 by a number , the quotient is 9 and the remainder is 1 . find the divisor ?
A.A.12.
B.B.15.
C.C.16.
D.D.17.
e ) e ) 21E.
"d = ( d - r ) / q = ( 190 - 1 ) / 9 = 189 / 9 = 21 e )" | null |
Question: let c be defined as the sum of all prime numbers between 0 and 32 . what is c / 3
A.155.
B.129.
C.61.
D.47.
e ) 53.3E.
"prime numbers between 0 and 30 - 2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29 , 31 sum , c = 160 c / 3 = 53,3 answer e" | null |
Question: exactly 28 % of the reporters for a certain wire service cover local politics in country x . if 30 % of the reporters who cover politics for the wire service do not cover local politics in country x , what percent of the reporters for the wire service do not cover politics ?
A.20 %.
B.42 %.
C.44 %.
D.60 %.
e ) 84 %D.
"let ' s assume there are 100 reporters - - > 28 reporters cover local politics . now , as 30 % of the reporters who cover all politics do not cover local politics then the rest 70 % of the reporters who cover politics do cover local politics , so if there are x reporters who cover politics then 70 % of them equal to 28 ( # of reporters who cover local politics ) : 0.7 x = 28 - - > x = 40 , hence 40 reporters cover politics and the rest 100 - 40 = 60 reporters do not cover politics at all . answer : d ." | null |
Question: a group of students decided to collect as many paise from each member of group as is the number of members . if the total collection amounts to rs . 98.01 , the number of the member is the group is :
A.57.
B.67.
C.77.
D.99.
e ) 97D.
"money collected = ( 98.01 x 100 ) paise = 9801 paise . number of members = square root of 9801 = 99 . answer : option d" | null |
Question: the speed of a car is 60 km in the first hour and 30 km in the second hour . what is the average speed of the car ?
A.45 kmph.
B.65 kmph.
C.75 kmph.
D.85 kmph.
e ) 90 kmphA.
"explanation : s = ( 60 + 30 ) / 2 = 45 kmph a )" | null |
Question: how many figures are required for numbering the pages of a book containing 1000 pages ?
A.2726.
B.2878.
C.2893.
D.2765.
e ) 1811C.
"explanation : 1 to 9 = 9 * 1 = 9 10 to 99 = 90 * 2 = 180 100 to 999 = 900 * 3 = 2700 1000 = 4 - - - - - - - - - - - 2893 answer : c" | null |
Question: if the length of the longest chord of a certain circle is 10 , what is the radius of that certain circle ?
['A.2.5', 'B.5', 'C.10', 'D.15', 'e ) 20']B.
longest chord of a circle is the diameter of the circle diameter = 2 * radius if diameter of the circle is given as 10 = 2 * 5 so radius of the circle = 5 correct answer - b | null |
Question: in how many ways 2 boys and 2 girls can be seated in a row so that boys and girls are alternate ?
A.7.
B.8.
C.9.
D.10.
e ) 11B.
"number of ways = 2 * 2 ! * 2 ! = 8 answer is b" | null |
Question: for what value of x , is | x – 3 | + | x + 1 | + | x | = 8 ?
A.0.
B.3.
C.- 3.
D.4.
e ) - 2E.
"for what value of x , is | x – 3 | + | x + 1 | + | x | = 8 ? it ' s easiest just to plug in answer choices : ( e ) : - 2 | x – 3 | + | x + 1 | + | x | = 8 ? | - 2 - 3 | + | - 2 + 1 | + | - 2 | = 8 ? | 1 | + | 5 | + | 4 | = 8 ( e )" | null |
Question: the ratio of number of boys and girls in a school is 3 : 2 . if there are 100 students in the school , find the number of girls in the school ?
A.25.
B.30.
C.35.
D.40.
e ) 50D.
"let the number of boys and girls be 3 x and 2 x total students = 100 number of girls in the school = 2 * 100 / 5 = 40 answer is d" | null |
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