Total number less than `3xx10^8` and can be formed using the digits 1, 2, 3 is equal to a. `1/2(3^9+4xx368)` b. `1/2(3^9-3)` c. `1/2(7xx3^8-3)` d. `1/2(3^9-3+3^8)`

Total numbers formed less than 3xx10^8 and can be formed using the digits 1, 2, 3 is equal to a. 1/2(3^9+4xx368) b. 1/2(3^9-3) c. 1/2(7xx3^8-3) d. 1/2(3^9-3+3^8)

Total numbers formed less than 3xx10^8 and can be formed using the digits 1, 2, 3 is equal to a. 1/2(3^9+4xx368) b. 1/2(3^9-3) c. 1/2(7xx3^8-3) d. 1/2(3^9-3+3^8)

The number of five-digit numbers which are divisible by 3 that can be formed by using the digits 1,2,3,4,5,6,7,8 and 9 , when repetition of digits is allowed, is (a) 3^(10) (b) 4.3^(8) (c) 5.3^(8) (d) 7.3^(8)

If a digit is chosen at random from the digits 1,2,3,4,5,6,7,8,9, then the probability that it is odd,is (4)/(9)( b) (5)/(9)(c)(1)/(9)(d)(2)/(3)

The sum of the series 1+ (2)/(3)((1)/(8)) + (2 xx 5 xx 8)/(3 xx 6 xx 9) ((1)/(8))^(3) +… is

The number of four digit numbers that can be formed using the digits 1,2,3,4,5,6,7,8,9 which are divisible by 3, when repetition of digits is allowed any number of times, is

Simplify : e. 5 (1)/(3) xx (3)/(8) - (7)/(9) div 2 (1)/(10)

Simplify: (1/2 xx 2/3)/(1/2 xx 2/3+3/8 xx 1/3)