Question

the number of number which are multiple of 3 and 5 in the first hundred natural number option A 10 option B 9 option C 7 option d 6​

Answer 1

Answer: Option D. 6

Step-by-step explanation:First Common multiple of 3 and 5 Is 15

Now..

AP = 15,30,.......90

An = a + (n-1)d

90 = 15 + (n-1)15

75/15 = n-1

5+1=n

So, n= 6

Therefore, number of Number that are divisible by 3 and 5 b/w 1 to 100 are 6

Hope this answer help u...