TCS
Company
Numerical Ability
Number System
Find the number of numbers from 1 to 100 which are not divisible by any one of 2,3,5,7.
Read Solution (Total 12)
-
- All Prime Numbers between 1 to 100 - (4)= 25-4
=> 21
- 9 years agoHelpfull: Yes(20) No(2)
- ans is 21
11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97 - 9 years agoHelpfull: Yes(11) No(3)
- @ Myana avishek,u have to exclude the prime no.s 2,3,5 and 7....so ans will be 25-4=21
- 9 years agoHelpfull: Yes(4) No(1)
- I think its 22....isn't 1 too to be added ....
so prime no:s b/w 1-100 =21
add '1' as digit 1 can't also be divided by any of the given digit
so, 21+1=22
- 9 years agoHelpfull: Yes(4) No(5)
- 11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97
ans is correct 21 - 9 years agoHelpfull: Yes(3) No(1)
- total 22
1,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97=22
- 9 years agoHelpfull: Yes(2) No(2)
- @ PARTH , pardon ,but the question is not to count prime no:s ..... make yourself clear with the question..'find the no; of numbers those are not completely divisible by 2 or 3 or 5 or 7 '....
- 9 years agoHelpfull: Yes(2) No(1)
- All Prime Numbers between 1 to 100 - (4)= 25-4
Ans is :: 21
- 9 years agoHelpfull: Yes(1) No(0)
- since the question is not between 1 t0 100. therefore u have to add 1 also.and the the answer is 22 not 21.
read the questions carefully before answering. - 9 years agoHelpfull: Yes(1) No(4)
- @Dheeraj 1 is not a prime nor a composite number..
- 9 years agoHelpfull: Yes(1) No(0)
- the numbers that are not divisible by 2,3,5 and 7 are prime numbers.There are 25 such numbers from 1 to 1100.
- 9 years agoHelpfull: Yes(0) No(3)
- why did u not consider 1 ?
- 8 years agoHelpfull: Yes(0) No(0)
TCS Other Question