Question
How many numbers are there between 999 and 10000 such
that at least one of their digits is 5?Solution
There is no digit to be 5 on any place in 4 digitsnumber from 1000 to 9999 = 8*9*9*9 (because of at 1000s place 0 and 5 both cannot come so 8 chances like wise for the unit,10s and100s place 5 cannot come so chance will be 9) =5832 Total number between 999 and 10000 = 9000 So, required numbers are =9000–5832=3168
3 : 12 :: 6 : ?
Six friends (J, K, L, M, N and O) go to a shop on different day starting from Monday to Saturday. Only two friends go after J. Two friends go between K ...
How many meaningful four-letter words can be formed using the 3rd letter, the 4th letter, the 8th letter, and the 9th letter, fro...
If it is possible to make a meaningful English word from 2nd, 4th, 6th and 8th letter of the word "AFFLUENT...
If it is possible to make a meaningful English word from the 2 nd, 5 th, 6 th and 9th letter of the word �...
In a certain code language, ‘4922945’ is related to 'DIVIDE' in the same way ‘1412091514’ is related to which of the following words?
...If it is possible to make a meaningful English word from the 2nd, 5th, 6th and 8th letter of the word ‘FR...
Select the correct option that indicates the arrangement of the given words in a logical and meaningful order.
1. Century
2. Decade <...
If it is possible to make a meaningful four letters English word using 1st, 2nd, 5th and 9th letters of the word ‘IMPOSSIBLE’ from the left end, th...
A group of alphabets are given with each being assigned a number. These have to be unscrambled into a meaningful word and correct the order of letters ...