3 balls are drawn randomly from a bag contains 3 black, 5 red and 4 blue balls. What is the probability that the balls drawn contain balls of different colors?
A, B and C jointly thought of engaging themselves in a business venture. It was agreed that A
would invest Rs. 6500 for 6 months, B, Rs. 8400 for 5 months and C, Rs. 10,000 for 3 months. A
wants to be the working member for which, he was to receive 5% of the profits. The profit earned
was Rs. 7400. Calculate the share of B in the profit.
a) Rs. 1900 b) Rs. 2660 c) Rs. 2800
d) Rs. 2840 e) None of these
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?
frank
Maths is your friend
If you meet with him every day, he becomes your best friend.
If you leave for a time he forget you and you forget him.