A box contains 4 red, 3 white and 2 blue balls. Three balls are drawn at random. Find out the number of ways of selecting the balls of different colours?
62
48
12
24
Correct Answer : D
The 288th term of the series a, b, b, c, c, c, d, d, d, d, e, e, e, e, e, f, f, f, f, f, f…. is
126, 756, 252, 1512, ____
In a number system the product of 44 and 11 is 2124. The number 3111 of this system, when converted to the decimal number system,
becomes: