Permutation and CombinationHard
Question
The number of numbers between 1 and 1010 which contain the digit 1 is -
Options
A.1010 − 910 − 1
B.910
C.1010 − 810
D.None of these
More Permutation and Combination Questions
Consider all the permutations of the word CORRUPTION. Number of words in which U appears prior to both R is equal to -...How many words can be formed from the letters of the word ′BHOPAL′ -...A father with 7 children takes 4 of them at a time to the zoo, as often as he can without taking the same four children ...All the 7 digit numbers containing each of the digits 1, 2, 3, 4, 5, 6, 7 exactly once and not divisible by 5 are arrang...The number of ways in which 8 answer books be arranged so that the best and the worst do not occur together is-...