If `(a-b)` is 6 more than `(c+d)` and `(a+b)` is 3 less than `(c-d)` , then `(a-c)` is (a) 0.5 (b) 1 (c) 1.5 (d) None of these

If a ,\ b ,\ c ,\ d are in proportion, then (a) a b=c d (b) a c=b d (c) a d=b c (d) None of these

The probability an event of a trial is (a)1 (b) 0 (c) less than 1 (d) more than 1

A B C is an isosceles triangle. If the coordinates of the base are B(1,3) and C(-2,7) , the coordinates of vertex A can be (a) (1,6) (b) (-1/2,5) (c) (5/6,6) (d) none of these

If a , b , c , d , e are five consecutive odd numbers, their average is (a) 5(a+4) (b) (a b c d e)/5 (c) 5(a+b+c+d+e) (d) None of these

The probability of a certain event is (a)0 (b) 1 (c) greater than 1 (d) less than 0

The probability an event of a trial is 1 (b) 0 (c) less than 1 (d) more than 1

A is 40% more than B and B is 60% less than C. If C is 60% more than D, then which of the following is true ?

The total number not more than 20 digits that are formed by usingd the digits 0,1,2,3, and 4 is a.5^(20) b.5^(20)-1 c.5^(20)+1 d.none of these

A is 20% more than B, B is 10% less than C and C is 15% more than D. Which of the following is true ?