Question 1

The smallest integer with four distinct prime factors would have its prime factors be the four smallest prime factors that exist. These are $2,$ $3,$ $5,$ and $7,$ so the answer is $2\times3\times5\times7=\boxed{210}$

Multiply the 4 smallest prime numbers... 2 X 3 X 5 X 7 = 210 :)

Hello,

as it is stated, 4 prime factors for that smallest + integer, we know that P=[2,3,5,7],

therefore it should be = 2 x 3 x 5 x 7 = 210....

thanks...

The product of first four prime numbers is the answer which are 2 3 5*7 = 210

just multiply the first four prime numbers.... 2 x 3 x 5 x 7 which is equal to 210

the first 4 prime numbers are 2, 3, 5, and 7. So the answer must be 2x3x5x7= 210

2,3,5,7=210

We have to just multiply the smallest 4 prime numberes = $2×3×5×7 = \color{#69047E}{\boxed{210}}$ .

the 4 smallest prime numbers are 2,3,5 and 7. So, the smallest positive number with 4 prime factors will be the product of them, which is 2 x 3 x 5 x 7 = 210

Four different smallest prime numbers are 2, 3, 5, 7. With these factors the number is 2 3 5*7=210

We are asked for the smallest positive integer with four different prime factors. The important words in this question are 'four' and 'different'. If they all have to be different, we will have to multiply together the four smallest existing prime numbers. They are 2, 3, 5 and 7. If we multiply those together we reach the answer of 210.

'QED' as it were!...