Five horses are in a race. Mr. A selects two of the horses at random and bets on them. The probability that Mr. A selected the winning horse is (a) 4/5 (b) 3/5 (c) 1/5 (d) 2/5

The age of a young man and his wife sum to 52 years. In seven years’ time, the man will be twice as old as his wife. Find the age of the man and his wife. Note: (Conditions) 1) Like ...

A parabola has the origin as its focus and the line x = 2 as the directrix. Then the vertex of the parabola is at (a) (0, 2) (b) (1, 0) (c) (1, 1) (d) (2, 0)

In how many different ways can the letters of the word ‘OPTICAL’ be arranged so that the vowels always come together? Explain it. a)920  b)800  c)590  d)720 Note: (Conditions) 1) Like Our Page on Facebook 2) Share this Question on Facebook

If a matrix has 14 elements, what are the possible orders it can have ? What, if it has 3 elements. Note: (Conditions) 1) Like Our Page on Facebook 2) Share this Question on Facebook (Winner will be provided Rs 50 ...

Salaries of Ram, Shyam and Sita are in the ratio 1 : 2 : 3. Salary of Shyam and Sita together is Rs. 6000. By what percent is the salary of Sita more than that of Ram? Explain it. (a)300% (b)110%

A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions. The number of choices available to him is, prove the answer ? (a) 140 (b) 196 (c) 280

The mean of the numbers a, b, 8, 5, 10 is 6 and the variance is 6.80. Then which one of the following gives possible values of a and b? (a) a = 0, b = 7 (b) a = 5, ...