Question

find no. of integers from set of first 200 natural no which is multiple of 3or 7or 10

Answer 1

oh lord help this little soul

Answer 2

First you should know multiple.

If a number is multiple of A a number it means it can be divided by that number.

So find all those numbers which can be devided by the lcm of 3 7 and 10.

the lcm is 210.

which is already beyond 200.

So your answer is 0.