Saved Bookmarks
| 1. |
How many integers in between 500 to 2020 (both inclusive) are multiple of 3 or 7? |
|
Answer» Answer: Step-by-step explanation: There are 17 integers b/w 1-300 which are divisible by 5 & 3 but not by 7 By taking the lcm of 5&3 we find that 1st integer divisible by both the no. Is 15 and the LAST one is 300 (as per the condition) HENCE by using the formula tn=a+(n-1)d we can find the no. Of integers divisible by 3 & 5 i.e 19 by using the same process we can get the no. Of integers divisible by 3,5 & 7 between 1-300 i.e 2 Now subtract both the obtained VALUES i.e 19-2=17 |
|