1.

The number of all the two digit numbers divisible by 2 or 3 are​

Answer»

You've got 100 numbers between 1 and 100.

50 of them are even, so they're divisible by 2.

Now, you have 100 divided by 3 = 33 + 1 remainder. This means that there are 33 numbers from 1 to 100 divisible by 3, but you have to pick only the odd ones, since you;ve ALREADY eliminated the even ones. The NUMBER off odd MULTIPLES of 3 between 1 and 100 will be 33/2 = 16 remainder 1. Since both 3 (the smallest multiple of 3) and 99 (the greatest multiple of 3) are both odd, this means that you have 17 odd numbers divisible by 3 between 1 and 100.

So your number will be 100 - 50 - 17 = 33.



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