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

5 less than -2 is (a)3 (b) -3 (c) -7 (d) 7

If a b c = 0, then ({(x^a)^b}^c)/({(x^b)^c}^a) = (a)3 (b) 0 (c) -1 (d) 1

(550% of 250)/275=? a.15 b.0.5 c.1.5 d.2.5 e.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

If a = - 2 , b = -1 , then ( a^b - b^a ) is equal to ( a ) -1 ( b ) 0.5 ( c ) -2 ( d ) -1.5

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