请同学们看下面的例题：
Tuesday, November 20, 2007
1)Twice the sum of 3 integers x ,y and z when divided by 7 gives remainder 1
what is the remainder when x+y+z is divided by 7?
Ans: 4
2) (1/2 + 1/3)+ (1/4 -1/3) + (1/2-1/4) = 1
3) 4 points A,B,C,D on a straight line such that AD:AB = 9:1 and AD:AC = 4:1
points A,B,C,D are:-
A. -20, -8, -10, 16
B. -20, -16, 11, 16
C. -20, -16, -11, 16
D. -20, -16, -11, 7
E. -20, -10, -11, 7
Ans: C
4) If probability of event M occuring is <1/4
Col a: prob of event M not occuring
Col b: 3/4
5) A semicircle was given with area 2pie find the perimeter of the semicircle
Ans: 2pie+4
6) x when divided by 7 leaves remainder 4.What is the remainder when 2x + 5 is divided by 7?
Ans: 6
7) The probability of raining tomorrow night is 0.46
Col a Col b
Probability of raining tomorrow night
and at high heat temp of 85degress is 0.54
Ans: B
Cool |x|<= 6, |y|<=4.
Col a Col b
The maximum value of |y/x| 1
Ans: D
9) The volume and height of a cylinder is given as 54pi and 6. Find the circumference of the base of
cylinder?
Ans: 6*pie
10) Given circle is x^2 + y^2 = 49 points on circle are A(3,a) and B(0,b) and given 'a' is positive and 'b'
is negative.
Col A : length of segment AB
Col B : 12
Ans: A
11) Given a figure of triangle with sides t, t, n. If the average of two angles of the triangle is 65 then
what is the value of n?
Ans: 80
12) 0<1
Col a Col b
x y^2
Ans: D
13) xy+x(y+2) when divided by 2 leaves a remainder
Cola Colb
Remainder 0
Ans: D
